Wetter is the surname of:
- August Wetter (de) (1890–1970), German politician (NSDAP)
- Bruce Wetter, American novelist
- Ernst Wetter (1877–1963), Swiss politician (FDP)
- Friedrich Wetter (born 1928), German Cardinal Archbishop of Munich and Freising
- Gustav A. Wetter (de) (1911–1991), Austrian Jesuit and historian
- Harry Wetter (1882–1934), Welsh international rugby union player
- Jack Wetter (1887–1967), Welsh international rugby union player
- Olive Emil Wetter (de) (born 1980), Swiss pianist
- Peter Wetter (de), German jurist and politician (CDU)
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