1966 Cincinnati Reds season

The 1966 Cincinnati Reds season consisted of the Reds finishing in seventh place in the National League with a record of 76–84, 18 games behind the NL Champion Los Angeles Dodgers. The Reds were managed by Don Heffner (37–46) and Dave Bristol (39–38), who replaced Heffner in mid-July.

Offseason

 * December 9, 1965: Frank Robinson was traded by the Reds to the Baltimore Orioles for Milt Pappas, Jack Baldschun, and Dick Simpson.

Notable transactions

 * April 4, 1966: Marty Keough was purchased from the Reds by the Atlanta Braves.
 * June 7, 1966: Gary Nolan was drafted by the Reds in the 1st round (13th pick) of the 1966 Major League Baseball draft.

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