Otto Onstad

P. Otto Onstad (June 4, 1874 – March 17, 1961) was an American educator and politician.

Born in the town of Christana, Dane County, Wisconsin, Onstad went to Albion Academy and to Luther College, Decorah, Iowa. He taught mathematics in rural schools and at Albion Academy. He was a farmer. Onstad served as Christiana town clerk and as chairman of the Christiana Town Board. In 1909 and 1911, Onstad served in the Wisconsin State Assembly as a Republican. In 1932, Onstad moved to Madison, Wisconsin and worked for the Wisconsin Highway Commission and for the Dane County Register of Deeds. Onstad died in Stoughton, Wisconsin.