Thomas F. Timlin (September 28, 1863 – October 29, 1903) was an American businessman and politician from Milwaukee, Wisconsin.

He was educated at St. Gall's Academy; after graduating he was in the grocery business until 1893 when he was appointed tax assessor of the fourth assessment district, a job he left in 1900, resigning to go into the real estate and fire insurance business.

In the general election, he defeated Republican Bart J. Ruddle and Social Democrat William H. Statz.

[3] He would be succeeded in the Assembly by fellow Democrat Thomas F. Ramsey (who was also an insurance and real-estate agent).

William H. Timlin later went on to become a prominent lawyer and a justice of the Wisconsin Supreme Court.