Frank Lawler (25 June 1842-17 January 1896) was a member of the US House of Representatives (D-IL 2) from 4 March 1885 to 3 March 1891, succeeding John F. Finerty and preceding Lawrence E. McGann. Born in Rochester, New York, he was raised in Chicago before becoming a railroad laborer and union organizer. He served on the city council from 1876 to 1885 and in Congress from 1885 to 1891, and he died in 1896.