Wetter is a surname. Notable people with the surname include:
Ernst Wetter (1877–1963), Swiss politician Fabian Wetter (born 1989), German footballer Friedrich Wetter (born 1928), German cardinal archbishop of Munich and Freising Harry Wetter (1882–1934), Welsh international rugby union player Herbert Wetter (1891–1966), Norwegian Olympic swimmer in Swimming at the 1912 Summer Olympics – Men's 1500 metre freestyle Jack Wetter (1887–1967), Welsh international rugby union player Paul Alan Wetter, American medical doctor
See also Berend von Wetter-Rosenthal (1874–1940), Baltic-German politician Wetter (disambiguation)