1993 Seattle Mariners season

The 1993 Seattle Mariners season was their 17th since the franchise creation. The team ended the season finishing fourth in the American League West, finishing with a record of .500. It was the franchise's first full season under the ownership of Nintendo president Hiroshi Yamauchi, with team chairman John Ellis representing him. During the 1993 season, Randy Johnson set a club record with 308 strikeouts. It was also the first season he walked less than 100 batters.

The previous fall, the team also introduced a new logo, team colors and uniform set for this season that remain the team's current look to this day (with slight adjustments made in 2015).

Offseason

 * October 5, 1992: John Moses was released by the Seattle Mariners.
 * October 14, 1992: The Mariners dismissed manager Bill Plummer, along with the entire coaching staff.
 * November 10, 1992: The Mariners hire Lou Piniella as the team's new manager.
 * November 17, 1992: Kevin Mitchell was traded by the Seattle Mariners to the Cincinnati Reds for Norm Charlton.
 * November 28, 1992: David Ortiz was signed by the Seattle Mariners as an amateur free agent.
 * December 23, 1992: Mackey Sasser was signed as a free agent with the Seattle Mariners.
 * February 2, 1993: Henry Cotto was signed as a free agent with the Seattle Mariners.
 * March 16, 1993: Mike Schooler was released by the Seattle Mariners.

Notable transactions

 * May 14, 1993: Randy St. Claire was signed as a free agent with the Mariners.
 * June 3, 1993: Alex Rodriguez was drafted by the Mariners with the first overall pick of the 1993 amateur draft. Player signed August 30, 1993.
 * June 3, 1993: Matt Wise was drafted by the Seattle Mariners in the 54th round of the 1993 amateur draft, but did not sign.
 * June 27, 1993: Dale Sveum was signed as a free agent.
 * June 27, 1993: Henry Cotto was traded with Jeff Darwin to the Florida Marlins for Dave Magadan.
 * July 21, 1993: Pete O'Brien was released to make room on the roster for Edgar Martínez.
 * August 5, 1993: Randy St. Claire was released by the Mariners.

Regular season

 * - style="text-align:center;"
 * Legend:      = Win       = Loss       = Postponement Bold = Mariners team member

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

Starting pitchers
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Other pitchers
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Relief pitchers
Note: G = Games pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; SO = Strikeouts

Awards and honors

 * Randy Johnson, American League leader, Strikeouts
 * Randy Johnson, Franchise Record, Most Strikeouts in one season