The Ishpeming–Negaunee Unions was the final moniker of the minor league baseball teams based in Ishpeming and Negaunee, Michigan. From 1890 to 1892, Ishpeming–Negaunee teams played as members of the Upper Peninsula League in 1890 and 1891 and Wisconsin-Michigan League in 1892. The franchise hosted home games at the Ishpeming Grounds in the 1890 and 1891 seasons and Union Park in 1892.