Ben Rubin (December 20, 1886 – February 24, 1942) was a cigar maker, zookeeper, union activist and member of the Wisconsin State Assembly from Milwaukee who served four terms. He was elected in 1930 and served one term as a Socialist. He was later elected as a Progressive on a fusion ticket, serving for six years (1937–1942). Rubin's district had the largest concentration of African-Americans in Wisconsin, and he was the author of a number of civil rights bills on topics such as insurance, employment by regulated utilities, and public accommodations.