The 1928 United States Senate election in Florida was held on November 6, 1928.
Incumbent Democratic Senator Park Trammell defeated a primary challenge from Governor of Florida John W. Martin and was re-elected to a third term in office over Republican Barclay Warburton.
Though Hoover's coattails did not make the race close, Warburton's percentage of the vote would not be exceeded by a Republican nominee for Senate until 1964.
Warburton was unopposed for the Republican nomination.