Thaddeus George McCotter, commonly known as Thad McCotter, (born August 22, 1965) is a Republican politician from the U.S. state of Michigan.

He currently represents the Michigan's 11th congressional district in the U.S. House of Representatives.

McCotter was born in Livonia, Michigan and graduated from Detroit Catholic Central High School, Redford in 1983. He received a B.A. from the University of Detroit in 1987 and a J.D. from the same school in 1990. He had a private law practice before being elected to the Wayne County Commission in 1992. While on the Commission, he helped change the county charter to require that new taxes win the approval of two-thirds of the Commission and 60% of voters in order to be passed.