The Pittsfield Senators were a minor league baseball team that played from 1970 to 1975 in the Washington Senators minor league system. In 1972 when the Senators moved to Texas and became the Texas Rangers, Pittsfield changed its name to the Pittsfield Rangers (1972 to 1975).

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They were located in Pittsfield, Massachusetts, played in the Double-A Eastern League. Their home ballpark was Wahconah Park.

The Rangers moved their Double-A affiliate to San Antonio of the Texas League in 1976 and were immediately replaced in Pittsfield by the Milwaukee Brewers, who renamed the team the Berkshire Brewers.