The 1955 Philadelphia Phillies season was a season in American baseball. It was the first season for Phillies' manager Mayo Smith. Prior to the season, the Phillies were seen to have strong pitching with ace Robin Roberts but did not have power hitters to match pennant favorites Brooklyn, New York, or Milwaukee, behind whom the Phillies finished in fourth place with a record of 77–77.

Offseason

Prior to the 1955 season, the Phillies purchased the 50 ft Ballantine Beer electronic scoreboard from Yankee Stadium for $175,000 from the Yankees. It was placed in right-center field at Connie Mack Stadium. This scoreboard was used through the final year at the ballpark.

Spring training

In March 1955, the Phillies began spring training play at Clearwater's Jack Russell Stadium. The stadium was dedicated on March 10, 1955. Baseball Commissioner Ford Frick, National League president Warren Giles, American League president Will Harridge, Clearwater mayor Herbert M. Brown, and other city dignitaries were in attendance. The Phillies played their first game at the stadium on the day of the dedication. Robin Roberts started for the Phillies against the Detroit Tigers. The Phillies won 4–2 on a two-run double by Willie Jones before 4,209 attendees.

Notable transactions

Regular season

Season standings

Record vs. opponents

Notable transactions

Game log

Roster

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

Awards and honors

All-Star Game

Farm system