Safeco Field, sometimes referred to as Safeco or The Safe, is a retractable roof baseball stadium located in Seattle, Washington, USA. It is the home stadium of the Seattle Mariners Major League Baseball club, seating 47,116 for baseball. The name is sometimes written as SAFECO Field, as its namesake corporation's name was actually an acronym and was rendered in all capital letters until 2000.

Safeco Field is one of two stadiums built to replace the Kingdome, with the other being Qwest Field, home of the NFL's Seattle Seahawks, which occupies the former Kingdome site.

Major non-baseball events that have been held at Safeco Field include the 2001 college football Seattle Bowl and WWE WrestleMania XIX, which set Safeco Field's attendance record of 54,097 in 2003.