Wittmer is a surname. Notable people with the surname include:
Albert Wittmer (1897–1950), American football and basketball player, lawyer, and state legislator Jeffrey Wittmer (born 1984), American weightlifter Kuno Wittmer (born 1982), Canadian racing driver Phil Wittmer, American information technology specialist
See also William A. Wittmer Lustron House Whitmer (disambiguation)