Alex C. Ruffing (November 2, 1892 - September 6, 1958) was an American machinist and Socialist from Milwaukee who served four terms (1919–1926) as a member of the Wisconsin State Assembly and one shortened term in Wisconsin State Senate representing Milwaukee County-based districts
Ruffing was born in Milwaukee on November 2, 1892. He was educated in the public and parochial schools and learned the machinist trade at the Allis Chalmers plant.
He had never entered electoral politics before a 1916 run for the Assembly from the 7th Milwaukee County district (7th and 10th wards of the City of Milwaukee), which he lost to Bernhard Gettelman by 85 votes) In 1918 Ruffing was elected to the same Assembly seat at the age of 26 years and three days, receiving 2,959 votes to 1,410 for Tony Rausch (Republican) (Gettelman had become chief deputy sheriff of Milwaukee County). He became the youngest member of the fifty-fourth session of the legislature, and was assigned to the standing committee on public welfare. He continued to work at the factory between sessions at first, but from 1923 to 1928 worked as an annexation solicitor for the City of Milwaukee.
He was re-elected in 1920 and 1922 without opposition, switching to the Committees on the Judiciary and then Finance, and in 1924 won re-election by 2367 votes to 1622 for Henry A. Zaidina.