The 1982 Seattle Mariners season was their sixth since the franchise creation, and the team finished fourth in the American League West with a record of .460. During their first decade, this was the Mariners' best season, their best previous total was 67 wins in 1979. Slightly past the season's midpoint on July 8, their record was .540, just three games behind division-leading Kansas City. Seattle was at .500 (59–59) on August 17, but then dropped seven straight, and closed the season at home with six consecutive losses. Home attendance at the Kingdome was 1.07 million, twelfth in the league; it was the first time over a million in five years, since the debut season of 1977. This was Rene Lachemann's only full year as manager with Seattle; previously the manager at its Class AAA affiliate in Spokane. He took over the major league club in early May 1981, initially on an interim basis, succeeding Maury Wills. Lachemann signed a three-year contract in October 1981, and another during the season in 1982, then was relieved of his duties in late June 1983.

Offseason

Regular season

The Mariners began the season by beating the Minnesota Twins 11–7, setting a franchise record for most runs scored on Opening Day.

Season standings

Record vs. opponents

Opening Day starters

Notable transactions

Draft picks

Roster

Game log

Regular season

Player stats

Batting

Starters by position

''Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Other batters

Pitching

Starting pitchers

Other pitchers

Relief pitchers

Farm system