The 1978 Minnesota Twins finished 73–89, fourth in the American League West.

Offseason

Regular season

On May 7, shortstop Roy Smalley Jr. set a Twins record by drawing five walks in a 15-9 win over the Baltimore Orioles. Smalley went 1 for 1 and scored three times. Third baseman Mike Cubbage, on July 27, became the fifth Twin to hit for the cycle (following Rod Carew, 1970; César Tovar, 1972; Larry Hisle, 1976 and Lyman Bostock, 1976). Cubbage went double, homer, single, triple off Toronto Blue Jays' pitching. In subsequent years, five others will match the feat: Gary Ward, 1980; Kirby Puckett, 1986; Carlos Gómez, 2008; Jason Kubel, 2009; and Michael Cuddyer, 2009. 787,878 fans attended Twins games, the second lowest total in the American League. Only one Twins player made the All-Star Game: first baseman Rod Carew. In that game at San Diego Stadium, Carew—in his twelfth consecutive All-Star appearance—performed an All-Star first by hitting two triples in the game. Carew won his seventh AL batting title with a .333 average, leading the team in hits and runs scored. Shortstop Roy Smalley hit 19 HR and collected 77 RBI. Dan Ford hit 11 HR and collected 82 RBI. Reliever Mike Marshall was signed in May and replaced Tom Johnson and Bill Campbell as manager Gene Mauch's all-purpose reliever. Marshall went on to rack up 10 relief wins along with 21 saves. Three starters had double digit wins: Dave Goltz (15-10), Roger Erickson (14-13), and Geoff Zahn (14-14).

Season standings

Record vs. opponents

Opening Day starters

Notable transactions

Roster

Game log

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

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

Pitching

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

Farm system

LEAGUE CHAMPIONS: Visalia, Elizabethton