Leuch is a surname. Notable people with the surname include:
Éric le Leuch (born 1971), French sprint canoer Morten Leuch (1732-1768), Norwegian timber trader and landowner Peter F. Leuch (1883-1959), American lawyer and politician
See also Annie Leuch-Reineck (1880-1978), Swiss mathematician and women's rights activist Leuchs, a surname