The Jamestown Jammers were a minor league baseball team based in Jamestown, New York from 1994 until 2014. The team was the Short-Season A classification affiliate of the Pittsburgh Pirates and played in the New York–Penn League. The team played all of their home games at Russell Diethrick Park. The Jamestown Jammers intellectual property is separate from the franchise and survived after the minor league franchise relocated. From 2015 to 2018, the Jammers name was used for collegiate summer baseball teams.