Daniel Saul Gelber (born November 26, 1960) is an American politician and former prosecutor serving as the Mayor of Miami Beach, Florida. He served in the Florida Legislature from 2000 to 2010 and was the Democratic nominee for Attorney General of Florida in 2010. Gelber was reelected mayor, without opposition, on September 6, 2019, after no other candidate qualified to challenge him by the filing deadline. His third term began in November 2021 and is slated to end in 2023.