Ronald Jason Klein is an American politician and lawyer who is a former member of the United States House of Representatives for Florida's 22nd congressional district. He is a member of the Democratic Party and chairs the Jewish Democratic Council of America. He previously served in the Florida House of Representatives and the Florida Senate. He is currently employed by the law firm Holland & Knight.

Florida's 22nd congressional district is a U.S. congressional district in Southeast Florida. In the 2020 redistricting cycle, it was drawn as a successor to the previous 21st district and includes Palm Beach, West Palm Beach, Boynton Beach and Delray Beach, as well as unincorporated Palm Beach County. The previous iteration of the 22nd district, which extended from Fort Lauderdale to Boca Raton, was instead renamed the 23rd district.