1863 Clinogaster van der Wulp, 1892 Clytiomya Róndani, 1861 Cnephalodes Townsend, 1911 Cnephaotachina Brauer & von Bergenstamm, 1895 Cockerelliana Townsend, 1915 Cololeskia Villeneuve, 1939 Coloradomyia Arnaud, 1963 Comatacta Coquillett, 1902 Comops Aldrich, 1934 Comopsis Cortés, 1986 Compsilura Bouché, 1834 Compsiluroides Mesnil, 1953 Compsoptesis Villeneuve, 1915 Comyops van der Wulp, 1891 Comyopsis Townsend, 1919 Conactia Townsend, 1927 Conactiodoria Townsend, 1934 Conogaster Brauer & von Bergenstamm, 1891 Conopomima Mesnil, 1978 Copecrypta Townsend, 1908 Coracomyia Aldrich, 1934 Cordillerodexia Townsend, 1927 Cordyligaster Macquart, 1844 Corpulentoepalpus Townsend, 1927 Corpulentosoma Townsend, 1914 Corybantia Richter, 1986 Coscaronia Cortés, 1979 Cossidophaga Baranov, 1934 Cowania Reinhard, 1952 Crapivnicia Richter, 1995 Crassicornia Kugler, 1980 Crocinosoma Reinhard, 1947 Croesoactia Townsend, 1927 Crosskeya Shima & Chao, 1988 Crypsina Brauer & von Bergenstamm, 1889 Cryptocladocera Bezzi, 1923 Cryptomeigenia Brauer & von Bergenstamm, 1891 Cryptopalpus Róndani, 1850 Ctenophorinia Mesnil, 1963 Cubaemyiopsis Thompson, 1963 Cucuba Richter, 2008 Cuparymyia Townsend, 1934 Currana Özdikmen, 2007 Cyanogymnomma Townsend, 1927 Cyanoleskia Mesnil, 1978 Cyanopsis Townsend, 1917