| Fri, Feb 20, 2026 | San Diego Padres | Seattle Mariners vs San Diego Padres - Fri, Feb 20, 2026 | Home | Peoria Stadium |
| Sat, Feb 21, 2026 | San Francisco Giants | Seattle Mariners vs San Francisco Giants - Sat, Feb 21, 2026 | Home | Peoria Stadium |
| Sun, Feb 22, 2026 | Cincinnati Reds | Seattle Mariners vs Cincinnati Reds - Sun, Feb 22, 2026 | Away | Goodyear Ballpark |
| Mon, Feb 23, 2026 | Los Angeles Dodgers | Seattle Mariners vs Los Angeles Dodgers - Mon, Feb 23, 2026 | Away | Camelback Ranch |
| Tue, Feb 24, 2026 | Chicago White Sox | Seattle Mariners vs Chicago White Sox - Tue, Feb 24, 2026 | Home | Peoria Stadium |
| Wed, Feb 25, 2026 | Kansas City Royals | Seattle Mariners vs Kansas City Royals - Wed, Feb 25, 2026 | Away | Surprise Stadium |
| Thu, Feb 26, 2026 | Cleveland Guardians | Seattle Mariners vs Cleveland Guardians - Thu, Feb 26, 2026 | Home | Peoria Stadium |
| Fri, Feb 27, 2026 | Arizona Diamondbacks | Seattle Mariners vs Arizona Diamondbacks - Fri, Feb 27, 2026 | Home | Peoria Stadium |
| Sat, Feb 28, 2026 | San Diego Padres | Seattle Mariners vs San Diego Padres - Sat, Feb 28, 2026 | Away | Peoria Stadium |
| Sun, Mar 1, 2026 | Texas Rangers | Seattle Mariners vs Texas Rangers - Sun, Mar 1, 2026 | Home | Peoria Stadium |
| Tue, Mar 3, 2026 | Los Angeles Angels | Seattle Mariners vs Los Angeles Angels - Tue, Mar 3, 2026 | Home | Peoria Stadium |
| Wed, Mar 4, 2026 | San Francisco Giants | Seattle Mariners vs San Francisco Giants - Wed, Mar 4, 2026 | Away | Scottsdale Stadium |
| Thu, Mar 5, 2026 | San Diego Padres | Seattle Mariners vs San Diego Padres - Thu, Mar 5, 2026 | Home | Peoria Stadium |
| Fri, Mar 6, 2026 | Texas Rangers | Seattle Mariners vs Texas Rangers - Fri, Mar 6, 2026 | Away | Surprise Stadium |
| Sat, Mar 7, 2026 | Chicago White Sox | Seattle Mariners vs Chicago White Sox - Sat, Mar 7, 2026 | Home | Peoria Stadium |
| Sun, Mar 8, 2026 | Milwaukee Brewers | Seattle Mariners vs Milwaukee Brewers - Sun, Mar 8, 2026 | Away | American Family Fields of Phoenix |
| Mon, Mar 9, 2026 | Arizona Diamondbacks | Seattle Mariners vs Arizona Diamondbacks - Mon, Mar 9, 2026 | Away | Salt River Fields at Talking Stick |
| Tue, Mar 10, 2026 | Kansas City Royals | Seattle Mariners vs Kansas City Royals - Tue, Mar 10, 2026 | Home | Peoria Stadium |
| Wed, Mar 11, 2026 | Colorado Rockies | Seattle Mariners vs Colorado Rockies - Wed, Mar 11, 2026 | Home | Peoria Stadium |
| Thu, Mar 12, 2026 | Chicago Cubs | Seattle Mariners vs Chicago Cubs - Thu, Mar 12, 2026 | Away | Sloan Park |
| Fri, Mar 13, 2026 | Los Angeles Dodgers | Seattle Mariners vs Los Angeles Dodgers - Fri, Mar 13, 2026 | Home | Peoria Stadium |
| Sat, Mar 14, 2026 | Los Angeles Angels | Seattle Mariners vs Los Angeles Angels - Sat, Mar 14, 2026 | Away | Tempe Diablo Stadium |
| Sun, Mar 15, 2026 | Cincinnati Reds | Seattle Mariners vs Cincinnati Reds - Sun, Mar 15, 2026 | Home | Peoria Stadium |
| Tue, Mar 17, 2026 | Colorado Rockies | Seattle Mariners vs Colorado Rockies - Tue, Mar 17, 2026 | Away | Salt River Fields at Talking Stick |
| Tue, Mar 17, 2026 | San Diego Padres | Seattle Mariners vs San Diego Padres - Tue, Mar 17, 2026 | Home | Peoria Stadium |
| Wed, Mar 18, 2026 | Milwaukee Brewers | Seattle Mariners vs Milwaukee Brewers - Wed, Mar 18, 2026 | Home | Peoria Stadium |
| Thu, Mar 19, 2026 | Oakland Athletics | Seattle Mariners vs Oakland Athletics - Thu, Mar 19, 2026 | Away | Hohokam Stadium |
| Fri, Mar 20, 2026 | Cleveland Guardians | Seattle Mariners vs Cleveland Guardians - Fri, Mar 20, 2026 | Away | Goodyear Ballpark |
| Sat, Mar 21, 2026 | Chicago Cubs | Seattle Mariners vs Chicago Cubs - Sat, Mar 21, 2026 | Home | Peoria Stadium |
| Sun, Mar 22, 2026 | Chicago White Sox | Seattle Mariners vs Chicago White Sox - Sun, Mar 22, 2026 | Away | Camelback Ranch |
| Mon, Mar 23, 2026 | San Diego Padres | Seattle Mariners vs San Diego Padres - Mon, Mar 23, 2026 | Away | Peoria Stadium |
| Thu, Mar 26, 2026 | Cleveland Guardians | Seattle Mariners vs Cleveland Guardians - Thu, Mar 26, 2026 | Home | T-Mobile Park |
| Fri, Mar 27, 2026 | Cleveland Guardians | Seattle Mariners vs Cleveland Guardians - Fri, Mar 27, 2026 | Home | T-Mobile Park |
| Sat, Mar 28, 2026 | Cleveland Guardians | Seattle Mariners vs Cleveland Guardians - Sat, Mar 28, 2026 | Home | T-Mobile Park |
| Sun, Mar 29, 2026 | Cleveland Guardians | Seattle Mariners vs Cleveland Guardians - Sun, Mar 29, 2026 | Home | T-Mobile Park |
| Mon, Mar 30, 2026 | New York Yankees | Seattle Mariners vs New York Yankees - Mon, Mar 30, 2026 | Home | T-Mobile Park |
| Tue, Mar 31, 2026 | New York Yankees | Seattle Mariners vs New York Yankees - Tue, Mar 31, 2026 | Home | T-Mobile Park |
| Wed, Apr 1, 2026 | New York Yankees | Seattle Mariners vs New York Yankees - Wed, Apr 1, 2026 | Home | T-Mobile Park |
| Fri, Apr 3, 2026 | Los Angeles Angels | Seattle Mariners vs Los Angeles Angels - Fri, Apr 3, 2026 | Away | Angel Stadium |
| Sat, Apr 4, 2026 | Los Angeles Angels | Seattle Mariners vs Los Angeles Angels - Sat, Apr 4, 2026 | Away | Angel Stadium |
| Sun, Apr 5, 2026 | Los Angeles Angels | Seattle Mariners vs Los Angeles Angels - Sun, Apr 5, 2026 | Away | Angel Stadium |
| Mon, Apr 6, 2026 | Texas Rangers | Seattle Mariners vs Texas Rangers - Mon, Apr 6, 2026 | Away | Globe Life Field |
| Tue, Apr 7, 2026 | Texas Rangers | Seattle Mariners vs Texas Rangers - Tue, Apr 7, 2026 | Away | Globe Life Field |
| Wed, Apr 8, 2026 | Texas Rangers | Seattle Mariners vs Texas Rangers - Wed, Apr 8, 2026 | Away | Globe Life Field |
| Fri, Apr 10, 2026 | Houston Astros | Seattle Mariners vs Houston Astros - Fri, Apr 10, 2026 | Home | T-Mobile Park |
| Sat, Apr 11, 2026 | Houston Astros | Seattle Mariners vs Houston Astros - Sat, Apr 11, 2026 | Home | T-Mobile Park |
| Sun, Apr 12, 2026 | Houston Astros | Seattle Mariners vs Houston Astros - Sun, Apr 12, 2026 | Home | T-Mobile Park |
| Mon, Apr 13, 2026 | Houston Astros | Seattle Mariners vs Houston Astros - Mon, Apr 13, 2026 | Home | T-Mobile Park |
| Tue, Apr 14, 2026 | San Diego Padres | Seattle Mariners vs San Diego Padres - Tue, Apr 14, 2026 | Away | Petco Park |
| Wed, Apr 15, 2026 | San Diego Padres | Seattle Mariners vs San Diego Padres - Wed, Apr 15, 2026 | Away | Petco Park |
| Thu, Apr 16, 2026 | San Diego Padres | Seattle Mariners vs San Diego Padres - Thu, Apr 16, 2026 | Away | Petco Park |
| Fri, Apr 17, 2026 | Texas Rangers | Seattle Mariners vs Texas Rangers - Fri, Apr 17, 2026 | Home | T-Mobile Park |
| Sat, Apr 18, 2026 | Texas Rangers | Seattle Mariners vs Texas Rangers - Sat, Apr 18, 2026 | Home | T-Mobile Park |
| Sun, Apr 19, 2026 | Texas Rangers | Seattle Mariners vs Texas Rangers - Sun, Apr 19, 2026 | Home | T-Mobile Park |
| Mon, Apr 20, 2026 | Oakland Athletics | Seattle Mariners vs Oakland Athletics - Mon, Apr 20, 2026 | Home | T-Mobile Park |
| Tue, Apr 21, 2026 | Oakland Athletics | Seattle Mariners vs Oakland Athletics - Tue, Apr 21, 2026 | Home | T-Mobile Park |
| Wed, Apr 22, 2026 | Oakland Athletics | Seattle Mariners vs Oakland Athletics - Wed, Apr 22, 2026 | Home | T-Mobile Park |
| Fri, Apr 24, 2026 | St Louis Cardinals | Seattle Mariners vs St Louis Cardinals - Fri, Apr 24, 2026 | Away | Busch Stadium |
| Sat, Apr 25, 2026 | St Louis Cardinals | Seattle Mariners vs St Louis Cardinals - Sat, Apr 25, 2026 | Away | Busch Stadium |
| Sun, Apr 26, 2026 | St Louis Cardinals | Seattle Mariners vs St Louis Cardinals - Sun, Apr 26, 2026 | Away | Busch Stadium |
| Mon, Apr 27, 2026 | Minnesota Twins | Seattle Mariners vs Minnesota Twins - Mon, Apr 27, 2026 | Away | Target Field |
| Tue, Apr 28, 2026 | Minnesota Twins | Seattle Mariners vs Minnesota Twins - Tue, Apr 28, 2026 | Away | Target Field |
| Wed, Apr 29, 2026 | Minnesota Twins | Seattle Mariners vs Minnesota Twins - Wed, Apr 29, 2026 | Away | Target Field |
| Fri, May 1, 2026 | Kansas City Royals | Seattle Mariners vs Kansas City Royals - Fri, May 1, 2026 | Home | T-Mobile Park |
| Sat, May 2, 2026 | Kansas City Royals | Seattle Mariners vs Kansas City Royals - Sat, May 2, 2026 | Home | T-Mobile Park |
| Sun, May 3, 2026 | Kansas City Royals | Seattle Mariners vs Kansas City Royals - Sun, May 3, 2026 | Home | T-Mobile Park |
| Mon, May 4, 2026 | Atlanta Braves | Seattle Mariners vs Atlanta Braves - Mon, May 4, 2026 | Home | T-Mobile Park |
| Tue, May 5, 2026 | Atlanta Braves | Seattle Mariners vs Atlanta Braves - Tue, May 5, 2026 | Home | T-Mobile Park |
| Wed, May 6, 2026 | Atlanta Braves | Seattle Mariners vs Atlanta Braves - Wed, May 6, 2026 | Home | T-Mobile Park |
| Fri, May 8, 2026 | Chicago White Sox | Seattle Mariners vs Chicago White Sox - Fri, May 8, 2026 | Away | Rate Field |
| Sat, May 9, 2026 | Chicago White Sox | Seattle Mariners vs Chicago White Sox - Sat, May 9, 2026 | Away | Rate Field |
| Sun, May 10, 2026 | Chicago White Sox | Seattle Mariners vs Chicago White Sox - Sun, May 10, 2026 | Away | Rate Field |
| Mon, May 11, 2026 | Houston Astros | Seattle Mariners vs Houston Astros - Mon, May 11, 2026 | Away | Daikin Park |
| Tue, May 12, 2026 | Houston Astros | Seattle Mariners vs Houston Astros - Tue, May 12, 2026 | Away | Daikin Park |
| Wed, May 13, 2026 | Houston Astros | Seattle Mariners vs Houston Astros - Wed, May 13, 2026 | Away | Daikin Park |
| Thu, May 14, 2026 | Houston Astros | Seattle Mariners vs Houston Astros - Thu, May 14, 2026 | Away | Daikin Park |
| Fri, May 15, 2026 | San Diego Padres | Seattle Mariners vs San Diego Padres - Fri, May 15, 2026 | Home | T-Mobile Park |
| Sat, May 16, 2026 | San Diego Padres | Seattle Mariners vs San Diego Padres - Sat, May 16, 2026 | Home | T-Mobile Park |
| Sun, May 17, 2026 | San Diego Padres | Seattle Mariners vs San Diego Padres - Sun, May 17, 2026 | Home | T-Mobile Park |
| Mon, May 18, 2026 | Chicago White Sox | Seattle Mariners vs Chicago White Sox - Mon, May 18, 2026 | Home | T-Mobile Park |
| Tue, May 19, 2026 | Chicago White Sox | Seattle Mariners vs Chicago White Sox - Tue, May 19, 2026 | Home | T-Mobile Park |
| Wed, May 20, 2026 | Chicago White Sox | Seattle Mariners vs Chicago White Sox - Wed, May 20, 2026 | Home | T-Mobile Park |
| Fri, May 22, 2026 | Kansas City Royals | Seattle Mariners vs Kansas City Royals - Fri, May 22, 2026 | Away | Kauffman Stadium |
| Sat, May 23, 2026 | Kansas City Royals | Seattle Mariners vs Kansas City Royals - Sat, May 23, 2026 | Away | Kauffman Stadium |
| Sun, May 24, 2026 | Kansas City Royals | Seattle Mariners vs Kansas City Royals - Sun, May 24, 2026 | Away | Kauffman Stadium |
| Mon, May 25, 2026 | Oakland Athletics | Seattle Mariners vs Oakland Athletics - Mon, May 25, 2026 | Away | Sutter Health Park |
| Tue, May 26, 2026 | Oakland Athletics | Seattle Mariners vs Oakland Athletics - Tue, May 26, 2026 | Away | Sutter Health Park |
| Wed, May 27, 2026 | Oakland Athletics | Seattle Mariners vs Oakland Athletics - Wed, May 27, 2026 | Away | Sutter Health Park |
| Fri, May 29, 2026 | Arizona Diamondbacks | Seattle Mariners vs Arizona Diamondbacks - Fri, May 29, 2026 | Home | T-Mobile Park |
| Sat, May 30, 2026 | Arizona Diamondbacks | Seattle Mariners vs Arizona Diamondbacks - Sat, May 30, 2026 | Home | T-Mobile Park |
| Sun, May 31, 2026 | Arizona Diamondbacks | Seattle Mariners vs Arizona Diamondbacks - Sun, May 31, 2026 | Home | T-Mobile Park |
| Mon, Jun 1, 2026 | New York Mets | Seattle Mariners vs New York Mets - Mon, Jun 1, 2026 | Home | T-Mobile Park |
| Tue, Jun 2, 2026 | New York Mets | Seattle Mariners vs New York Mets - Tue, Jun 2, 2026 | Home | T-Mobile Park |
| Wed, Jun 3, 2026 | New York Mets | Seattle Mariners vs New York Mets - Wed, Jun 3, 2026 | Home | T-Mobile Park |
| Fri, Jun 5, 2026 | Detroit Tigers | Seattle Mariners vs Detroit Tigers - Fri, Jun 5, 2026 | Away | Comerica Park |
| Sat, Jun 6, 2026 | Detroit Tigers | Seattle Mariners vs Detroit Tigers - Sat, Jun 6, 2026 | Away | Comerica Park |
| Sun, Jun 7, 2026 | Detroit Tigers | Seattle Mariners vs Detroit Tigers - Sun, Jun 7, 2026 | Away | Comerica Park |
| Mon, Jun 8, 2026 | Baltimore Orioles | Seattle Mariners vs Baltimore Orioles - Mon, Jun 8, 2026 | Away | Oriole Park at Camden Yards |
| Tue, Jun 9, 2026 | Baltimore Orioles | Seattle Mariners vs Baltimore Orioles - Tue, Jun 9, 2026 | Away | Oriole Park at Camden Yards |
| Wed, Jun 10, 2026 | Baltimore Orioles | Seattle Mariners vs Baltimore Orioles - Wed, Jun 10, 2026 | Away | Oriole Park at Camden Yards |
| Thu, Jun 11, 2026 | Baltimore Orioles | Seattle Mariners vs Baltimore Orioles - Thu, Jun 11, 2026 | Away | Oriole Park at Camden Yards |
| Fri, Jun 12, 2026 | Washington Nationals | Seattle Mariners vs Washington Nationals - Fri, Jun 12, 2026 | Away | Nationals Park |
| Sat, Jun 13, 2026 | Washington Nationals | Seattle Mariners vs Washington Nationals - Sat, Jun 13, 2026 | Away | Nationals Park |
| Sun, Jun 14, 2026 | Washington Nationals | Seattle Mariners vs Washington Nationals - Sun, Jun 14, 2026 | Away | Nationals Park |
| Tue, Jun 16, 2026 | Baltimore Orioles | Seattle Mariners vs Baltimore Orioles - Tue, Jun 16, 2026 | Home | T-Mobile Park |
| Wed, Jun 17, 2026 | Baltimore Orioles | Seattle Mariners vs Baltimore Orioles - Wed, Jun 17, 2026 | Home | T-Mobile Park |
| Thu, Jun 18, 2026 | Baltimore Orioles | Seattle Mariners vs Baltimore Orioles - Thu, Jun 18, 2026 | Home | T-Mobile Park |
| Fri, Jun 19, 2026 | Boston Red Sox | Seattle Mariners vs Boston Red Sox - Fri, Jun 19, 2026 | Home | T-Mobile Park |
| Sat, Jun 20, 2026 | Boston Red Sox | Seattle Mariners vs Boston Red Sox - Sat, Jun 20, 2026 | Home | T-Mobile Park |
| Sun, Jun 21, 2026 | Boston Red Sox | Seattle Mariners vs Boston Red Sox - Sun, Jun 21, 2026 | Home | T-Mobile Park |
| Tue, Jun 23, 2026 | Pittsburgh Pirates | Seattle Mariners vs Pittsburgh Pirates - Tue, Jun 23, 2026 | Away | PNC Park |
| Wed, Jun 24, 2026 | Pittsburgh Pirates | Seattle Mariners vs Pittsburgh Pirates - Wed, Jun 24, 2026 | Away | PNC Park |
| Thu, Jun 25, 2026 | Pittsburgh Pirates | Seattle Mariners vs Pittsburgh Pirates - Thu, Jun 25, 2026 | Away | PNC Park |
| Fri, Jun 26, 2026 | Cleveland Guardians | Seattle Mariners vs Cleveland Guardians - Fri, Jun 26, 2026 | Away | Progressive Field |
| Sat, Jun 27, 2026 | Cleveland Guardians | Seattle Mariners vs Cleveland Guardians - Sat, Jun 27, 2026 | Away | Progressive Field |
| Sun, Jun 28, 2026 | Cleveland Guardians | Seattle Mariners vs Cleveland Guardians - Sun, Jun 28, 2026 | Away | Progressive Field |
| Mon, Jun 29, 2026 | Los Angeles Angels | Seattle Mariners vs Los Angeles Angels - Mon, Jun 29, 2026 | Home | T-Mobile Park |
| Tue, Jun 30, 2026 | Los Angeles Angels | Seattle Mariners vs Los Angeles Angels - Tue, Jun 30, 2026 | Home | T-Mobile Park |
| Thu, Jul 2, 2026 | Los Angeles Angels | Seattle Mariners vs Los Angeles Angels - Thu, Jul 2, 2026 | Home | T-Mobile Park |
| Fri, Jul 3, 2026 | Toronto Blue Jays | Seattle Mariners vs Toronto Blue Jays - Fri, Jul 3, 2026 | Home | T-Mobile Park |
| Sat, Jul 4, 2026 | Toronto Blue Jays | Seattle Mariners vs Toronto Blue Jays - Sat, Jul 4, 2026 | Home | T-Mobile Park |
| Sun, Jul 5, 2026 | Toronto Blue Jays | Seattle Mariners vs Toronto Blue Jays - Sun, Jul 5, 2026 | Home | T-Mobile Park |
| Tue, Jul 7, 2026 | Miami Marlins | Seattle Mariners vs Miami Marlins - Tue, Jul 7, 2026 | Away | loanDepot park |
| Wed, Jul 8, 2026 | Miami Marlins | Seattle Mariners vs Miami Marlins - Wed, Jul 8, 2026 | Away | loanDepot park |
| Thu, Jul 9, 2026 | Miami Marlins | Seattle Mariners vs Miami Marlins - Thu, Jul 9, 2026 | Away | loanDepot park |
| Fri, Jul 10, 2026 | Tampa Bay Rays | Seattle Mariners vs Tampa Bay Rays - Fri, Jul 10, 2026 | Away | Tropicana Field |
| Sat, Jul 11, 2026 | Tampa Bay Rays | Seattle Mariners vs Tampa Bay Rays - Sat, Jul 11, 2026 | Away | Tropicana Field |
| Sun, Jul 12, 2026 | Tampa Bay Rays | Seattle Mariners vs Tampa Bay Rays - Sun, Jul 12, 2026 | Away | Tropicana Field |
| Fri, Jul 17, 2026 | San Francisco Giants | Seattle Mariners vs San Francisco Giants - Fri, Jul 17, 2026 | Home | T-Mobile Park |
| Sat, Jul 18, 2026 | San Francisco Giants | Seattle Mariners vs San Francisco Giants - Sat, Jul 18, 2026 | Home | T-Mobile Park |
| Sun, Jul 19, 2026 | San Francisco Giants | Seattle Mariners vs San Francisco Giants - Sun, Jul 19, 2026 | Home | T-Mobile Park |
| Mon, Jul 20, 2026 | Cincinnati Reds | Seattle Mariners vs Cincinnati Reds - Mon, Jul 20, 2026 | Home | T-Mobile Park |
| Tue, Jul 21, 2026 | Cincinnati Reds | Seattle Mariners vs Cincinnati Reds - Tue, Jul 21, 2026 | Home | T-Mobile Park |
| Wed, Jul 22, 2026 | Cincinnati Reds | Seattle Mariners vs Cincinnati Reds - Wed, Jul 22, 2026 | Home | T-Mobile Park |
| Fri, Jul 24, 2026 | Texas Rangers | Seattle Mariners vs Texas Rangers - Fri, Jul 24, 2026 | Away | Globe Life Field |
| Sat, Jul 25, 2026 | Texas Rangers | Seattle Mariners vs Texas Rangers - Sat, Jul 25, 2026 | Away | Globe Life Field |
| Sun, Jul 26, 2026 | Texas Rangers | Seattle Mariners vs Texas Rangers - Sun, Jul 26, 2026 | Away | Globe Life Field |
| Mon, Jul 27, 2026 | Texas Rangers | Seattle Mariners vs Texas Rangers - Mon, Jul 27, 2026 | Away | Globe Life Field |
| Tue, Jul 28, 2026 | Los Angeles Dodgers | Seattle Mariners vs Los Angeles Dodgers - Tue, Jul 28, 2026 | Away | UNIQLO Field at Dodger Stadium |
| Wed, Jul 29, 2026 | Los Angeles Dodgers | Seattle Mariners vs Los Angeles Dodgers - Wed, Jul 29, 2026 | Away | UNIQLO Field at Dodger Stadium |
| Thu, Jul 30, 2026 | Los Angeles Dodgers | Seattle Mariners vs Los Angeles Dodgers - Thu, Jul 30, 2026 | Away | UNIQLO Field at Dodger Stadium |
| Fri, Jul 31, 2026 | Minnesota Twins | Seattle Mariners vs Minnesota Twins - Fri, Jul 31, 2026 | Home | T-Mobile Park |
| Sat, Aug 1, 2026 | Minnesota Twins | Seattle Mariners vs Minnesota Twins - Sat, Aug 1, 2026 | Home | T-Mobile Park |
| Sun, Aug 2, 2026 | Minnesota Twins | Seattle Mariners vs Minnesota Twins - Sun, Aug 2, 2026 | Home | T-Mobile Park |
| Tue, Aug 4, 2026 | Detroit Tigers | Seattle Mariners vs Detroit Tigers - Tue, Aug 4, 2026 | Home | T-Mobile Park |
| Wed, Aug 5, 2026 | Detroit Tigers | Seattle Mariners vs Detroit Tigers - Wed, Aug 5, 2026 | Home | T-Mobile Park |
| Thu, Aug 6, 2026 | Detroit Tigers | Seattle Mariners vs Detroit Tigers - Thu, Aug 6, 2026 | Home | T-Mobile Park |
| Fri, Aug 7, 2026 | Tampa Bay Rays | Seattle Mariners vs Tampa Bay Rays - Fri, Aug 7, 2026 | Home | T-Mobile Park |
| Sat, Aug 8, 2026 | Tampa Bay Rays | Seattle Mariners vs Tampa Bay Rays - Sat, Aug 8, 2026 | Home | T-Mobile Park |
| Sun, Aug 9, 2026 | Tampa Bay Rays | Seattle Mariners vs Tampa Bay Rays - Sun, Aug 9, 2026 | Home | T-Mobile Park |
| Tue, Aug 11, 2026 | New York Yankees | Seattle Mariners vs New York Yankees - Tue, Aug 11, 2026 | Away | Yankee Stadium |
| Wed, Aug 12, 2026 | New York Yankees | Seattle Mariners vs New York Yankees - Wed, Aug 12, 2026 | Away | Yankee Stadium |
| Thu, Aug 13, 2026 | New York Yankees | Seattle Mariners vs New York Yankees - Thu, Aug 13, 2026 | Away | Yankee Stadium |
| Fri, Aug 14, 2026 | Houston Astros | Seattle Mariners vs Houston Astros - Fri, Aug 14, 2026 | Away | Daikin Park |
| Sat, Aug 15, 2026 | Houston Astros | Seattle Mariners vs Houston Astros - Sat, Aug 15, 2026 | Away | Daikin Park |
| Sun, Aug 16, 2026 | Houston Astros | Seattle Mariners vs Houston Astros - Sun, Aug 16, 2026 | Away | Daikin Park |
| Tue, Aug 18, 2026 | Milwaukee Brewers | Seattle Mariners vs Milwaukee Brewers - Tue, Aug 18, 2026 | Away | American Family Field |
| Wed, Aug 19, 2026 | Milwaukee Brewers | Seattle Mariners vs Milwaukee Brewers - Wed, Aug 19, 2026 | Away | American Family Field |
| Thu, Aug 20, 2026 | Milwaukee Brewers | Seattle Mariners vs Milwaukee Brewers - Thu, Aug 20, 2026 | Away | American Family Field |
| Fri, Aug 21, 2026 | Chicago Cubs | Seattle Mariners vs Chicago Cubs - Fri, Aug 21, 2026 | Home | T-Mobile Park |
| Sat, Aug 22, 2026 | Chicago Cubs | Seattle Mariners vs Chicago Cubs - Sat, Aug 22, 2026 | Home | T-Mobile Park |
| Sun, Aug 23, 2026 | Chicago Cubs | Seattle Mariners vs Chicago Cubs - Sun, Aug 23, 2026 | Home | T-Mobile Park |
| Mon, Aug 24, 2026 | Philadelphia Phillies | Seattle Mariners vs Philadelphia Phillies - Mon, Aug 24, 2026 | Home | T-Mobile Park |
| Tue, Aug 25, 2026 | Philadelphia Phillies | Seattle Mariners vs Philadelphia Phillies - Tue, Aug 25, 2026 | Home | T-Mobile Park |
| Wed, Aug 26, 2026 | Philadelphia Phillies | Seattle Mariners vs Philadelphia Phillies - Wed, Aug 26, 2026 | Home | T-Mobile Park |
| Fri, Aug 28, 2026 | Toronto Blue Jays | Seattle Mariners vs Toronto Blue Jays - Fri, Aug 28, 2026 | Away | Rogers Centre |
| Sat, Aug 29, 2026 | Toronto Blue Jays | Seattle Mariners vs Toronto Blue Jays - Sat, Aug 29, 2026 | Away | Rogers Centre |
| Sun, Aug 30, 2026 | Toronto Blue Jays | Seattle Mariners vs Toronto Blue Jays - Sun, Aug 30, 2026 | Away | Rogers Centre |
| Mon, Aug 31, 2026 | Boston Red Sox | Seattle Mariners vs Boston Red Sox - Mon, Aug 31, 2026 | Away | Fenway Park |
| Tue, Sep 1, 2026 | Boston Red Sox | Seattle Mariners vs Boston Red Sox - Tue, Sep 1, 2026 | Away | Fenway Park |
| Wed, Sep 2, 2026 | Boston Red Sox | Seattle Mariners vs Boston Red Sox - Wed, Sep 2, 2026 | Away | Fenway Park |
| Thu, Sep 3, 2026 | Oakland Athletics | Seattle Mariners vs Oakland Athletics - Thu, Sep 3, 2026 | Home | T-Mobile Park |
| Fri, Sep 4, 2026 | Oakland Athletics | Seattle Mariners vs Oakland Athletics - Fri, Sep 4, 2026 | Home | T-Mobile Park |
| Sat, Sep 5, 2026 | Oakland Athletics | Seattle Mariners vs Oakland Athletics - Sat, Sep 5, 2026 | Home | T-Mobile Park |
| Sun, Sep 6, 2026 | Oakland Athletics | Seattle Mariners vs Oakland Athletics - Sun, Sep 6, 2026 | Home | T-Mobile Park |
| Tue, Sep 8, 2026 | Texas Rangers | Seattle Mariners vs Texas Rangers - Tue, Sep 8, 2026 | Home | T-Mobile Park |
| Wed, Sep 9, 2026 | Texas Rangers | Seattle Mariners vs Texas Rangers - Wed, Sep 9, 2026 | Home | T-Mobile Park |
| Thu, Sep 10, 2026 | Texas Rangers | Seattle Mariners vs Texas Rangers - Thu, Sep 10, 2026 | Home | T-Mobile Park |
| Fri, Sep 11, 2026 | Oakland Athletics | Seattle Mariners vs Oakland Athletics - Fri, Sep 11, 2026 | Away | Sutter Health Park |
| Sat, Sep 12, 2026 | Oakland Athletics | Seattle Mariners vs Oakland Athletics - Sat, Sep 12, 2026 | Away | Sutter Health Park |
| Sun, Sep 13, 2026 | Oakland Athletics | Seattle Mariners vs Oakland Athletics - Sun, Sep 13, 2026 | Away | Sutter Health Park |
| Mon, Sep 14, 2026 | Los Angeles Angels | Seattle Mariners vs Los Angeles Angels - Mon, Sep 14, 2026 | Away | Angel Stadium |
| Tue, Sep 15, 2026 | Los Angeles Angels | Seattle Mariners vs Los Angeles Angels - Tue, Sep 15, 2026 | Away | Angel Stadium |
| Wed, Sep 16, 2026 | Los Angeles Angels | Seattle Mariners vs Los Angeles Angels - Wed, Sep 16, 2026 | Away | Angel Stadium |
| Fri, Sep 18, 2026 | Colorado Rockies | Seattle Mariners vs Colorado Rockies - Fri, Sep 18, 2026 | Away | Coors Field |
| Sat, Sep 19, 2026 | Colorado Rockies | Seattle Mariners vs Colorado Rockies - Sat, Sep 19, 2026 | Away | Coors Field |
| Sun, Sep 20, 2026 | Colorado Rockies | Seattle Mariners vs Colorado Rockies - Sun, Sep 20, 2026 | Away | Coors Field |
| Tue, Sep 22, 2026 | Houston Astros | Seattle Mariners vs Houston Astros - Tue, Sep 22, 2026 | Home | T-Mobile Park |
| Wed, Sep 23, 2026 | Houston Astros | Seattle Mariners vs Houston Astros - Wed, Sep 23, 2026 | Home | T-Mobile Park |
| Thu, Sep 24, 2026 | Los Angeles Angels | Seattle Mariners vs Los Angeles Angels - Thu, Sep 24, 2026 | Home | T-Mobile Park |
| Fri, Sep 25, 2026 | Los Angeles Angels | Seattle Mariners vs Los Angeles Angels - Fri, Sep 25, 2026 | Home | T-Mobile Park |
| Sat, Sep 26, 2026 | Los Angeles Angels | Seattle Mariners vs Los Angeles Angels - Sat, Sep 26, 2026 | Home | T-Mobile Park |
| Sun, Sep 27, 2026 | Los Angeles Angels | Seattle Mariners vs Los Angeles Angels - Sun, Sep 27, 2026 | Home | T-Mobile Park |