Zweifel

Zweifel is a German surname. Notable people with the surname include:


 * Albert Zweifel (born 1949), former professional cyclo-cross cyclist
 * Clint Zweifel (born 1973), American politician from Missouri
 * David E. Zweifel (born 1934), American Ambassador to North Yemen
 * Paul Zweifel (1848–1927), German gynaecologist and physiologist
 * Richard G. Zweifel (1926–2019), American herpetologist
 * Zweifel's frog (Rana zweifeli)