Radtke is a German surname. Notable people with the surname include:Bernhard Radtke, East German weightlifter Charles Radtke, American furniture maker Dennis Radtke, German politician Dinah Radtke, German activist Helga Radtke, German long and triple jumper Jack Radtke (1913–2006), American baseball player Jan Radtke (1872–1958), Polish politician Katarzyna Radtke, Polish racewalker Kathleen Radtke, German footballer Kristen Radtke, American writer and illustrator Peter Radtke (1943–2020), German actor and playwright Randall J. Radtke, American politician