Gustav J. Riemer (April 26, 1860 - 1922) was an American machinist from Milwaukee, Wisconsin who spent a single two-year term as a People's Party member of the Wisconsin State Assembly.
He had never held any public office (although he was president of his machinists' union[2]) until he was elected to the Assembly on the People's Party ticket in 1886 from the 2nd Milwaukee County Assembly district (the Second Ward of the City of Milwaukee), receiving 1,214 votes to 871 votes for Democrat John C. F. Brand, 853 for Republican F. T. Stuewe, and 1 vote for Prohibitionist E. G. Comstock.
In 1894, he was involved in arranging the purchase of the Interlachen Hotel on Beaver Lake in Waukesha County, Wisconsin, a transaction which ended up going to the Wisconsin Supreme Court due to a dispute over a verbal contract with the seller (Riemer won).
[4] In 1899, he is reported as the vice president of a Milwaukee & Lake Geneva Electric Railway, which was buying right of way for an interurban railroad.
[5] By 1903, he was described as a "bridge builder" on the St. Paul Railroad, and as making his home in Oconomowoc.