Laurence Francis Rooney III is an American politician and diplomat who was a U.S. representative for Florida's 19th congressional district from 2017 to 2021. A Republican, he served as the U.S. ambassador to the Holy See from 2005 until 2008. Rooney earned a 95.90% lifetime score from the American Conservative Union.

Florida's 19th congressional district is a U.S. congressional district in Southwest Florida. It includes the cities of Cape Coral, Fort Myers, Fort Myers Beach, Sanibel, Bonita Springs, Naples and Marco Island, as well as unincorporated areas in Lee and Collier counties. It has been represented by Republican Byron Donalds since 2021.