John Francis Cosgrove (July 1, 1949 – April 19, 2006) was a Florida legislator.

In January 2006, he was elected the first mayor of the newly incorporated town of Cutler Bay, Florida.

While vacationing in Zimbabwe, Cosgrove underwent an emergency appendectomy at a medical facility in South Africa.

In 2007, a portion of the Homestead Extension of Florida's Turnpike between Southwest 152nd and 216th streets in Palmetto Bay and Cutler Bay was designated by the Florida legislature as the "John F. Cosgrove Highway."

As an undergraduate at Florida, he became a brother of Phi Kappa Tau fraternity and was later its National President and legal counsel.