Otto Mueller (December 19, 1875 – January 9, 1973) was an American Republican politician and businessman from Wisconsin.

Career Born in Wausau, Wisconsin, Mueller was a jeweler in Wausau. He served on the Marathon County, Wisconsin Board of Supervisors. He served in the Wisconsin State Senate 1927-1933 and 1939–1941.'Wisconsin Blue Book 1940,' Biographical Sketch of Otto Mueller, pg. 33

Recall election In 1932, Mueller survived a recall election.Recall Election

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