1978 Toronto Blue Jays season

The 1978 Toronto Blue Jays season was the franchise's second season of Major League Baseball. It resulted in the Blue Jays finishing seventh in the American League East with a record of 59 wins and 102 losses.

Transactions
Transactions by the Toronto Blue Jays during the off-season before the 1978 season.

Opening Day starters

 * Alan Ashby
 * Bob Bailor
 * Rick Bosetti
 * Rico Carty
 * Jerry Garvin
 * Luis Gómez
 * Roy Howell
 * Tommy Hutton
 * John Mayberry
 * Dave McKay
 * Dave Lemanczyk

Transactions
Transactions for the Toronto Blue Jays during the 1978 regular season.

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''

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; 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
 * Roy Howell, reserve