The 1979 Toronto Blue Jays season was the franchise's third season of Major League Baseball. It resulted in the Blue Jays finishing seventh in the American League East with a record of 53 wins and 109 losses. The Blue Jays were the only American League East team to finish 1979 with a losing record and the loss total of 109 set the franchise mark; it is also the last time as of 2023 the team lost over 100 games in a season. Attendance for the season decreased to 1,431,651.

Offseason

Transactions

Transactions by the Toronto Blue Jays during the off-season before the 1979 season.

October 1978

November 1978

December 1978

January 1979

March 1979

Regular season

Following the team's poor performance, manager Roy Hartsfield was fired at the end of the season. One highlight of the season was the awarding of the American League Rookie of the Year Award to Alfredo Griffin. The end of the 1979 season marked a crossroads for the franchise. The first real talent from the minor leagues had made it to the major league roster. Such talent included pitcher Dave Stieb and third baseman Danny Ainge.

Season standings

Record vs. opponents

Opening Day starters

Transactions

Transactions for the Toronto Blue Jays during the 1979 regular season.

April 1979

May 1979

June 1979

July 1979

Draft picks

Roster

Game log

Player stats

Batting

Starters by position

''Note: Pos = Position; G = Games played; AB = At bats; R = Runs scored; H = Hits; 2B = Doubles; 3B = Triples; Avg. = Batting average; HR = Home runs; RBI = Runs batted in; SB = Stolen bases''

Other batters

''Note: G = Games played; AB = At bats; R = Runs scored; H = Hits; 2B = Doubles; 3B = Triples; Avg. = Batting average; HR = Home runs; RBI = Runs batted in; SB = Stolen bases''

Pitching

Starting pitchers

Note: G = Games pitched; GS = Games started; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; R = Runs allowed; ER = Earned runs allowed; BB = Walks allowed; K = Strikeouts

Other pitchers

Note: G = Games pitched; GS = Games started; IP = Innings pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; R = Runs allowed; ER = Earned runs allowed; BB = Walks allowed; K = Strikeouts

Relief pitchers

Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; R = Runs allowed; ER = Earned runs allowed; BB = Walks allowed; K = Strikeouts

Awards and honours

All-Star Game

Farm system