Radler is a surname. Notable people with the surname include:
- Błażej Radler (born 1982, Rydułtowy), Polish professional footballer
- F. David Radler (born 1944, Montreal, Quebec), Canadian executive and close associate of Conrad Black
- Dorothy Raedler (born 1917, New York City)
- Johann Rädler (born 1952), Austrian politician (ÖVP)[1]
- Josef Karl Rädler (1844–1917), Austrian porcelain painter
- Antonie Rädler (1899–1991), Marian religious visionary who founded the Maria vom Sieg shrine in Wigratzbad[2]