Joseph A. Domachowski (November 26, 1872 – July 2, 1942) was an American politician.
Born in Poland, Domachowski emigrated to the United States and settled in Milwaukee, Wisconsin in 1881.
Domachowski was a painter and decorator and worked with Prudential Mutual Insurance.
He was also Milwaukee County director of pensions and was to retire on July 31, 1942.
This article about a Democratic Party member of the Wisconsin State Assembly is a stub.