The Tri-City Posse was an American minor league baseball team located in the Tri-Cities of Washington. The team was a founding member of the independent Western Baseball League, and was not affiliated with any Major League Baseball team. Its home stadium was Tri-City Stadium, now Gesa Stadium, in west Pasco.
The Posse was founded in 1995 and played their final season in 2000, having won the league title in 1999.