Thomas O'Connor (December 21, 1815 – October 21, 1901) was an American farmer and politician.
Born in King's County, Ireland, O'Connor emigrated to the United States settling in Pennsylvania and then in Michigan.
In 1856, he settled in Halder, Wisconsin and was a farmer.
In 1891, he served in the Wisconsin State Assembly and was a Democrat.
This article about a Democratic Party member of the Wisconsin State Assembly is a stub.