Vettius is een geslacht van vlinders van de familie dikkopjes (Hesperiidae), uit de onderfamilie Hesperiinae.
Soorten V. argentus Freeman, 1969 V. artona (Hewitson, 1868) V. arva Evans, 1955 V. coryna (Hewitson, 1866) V. crispa Evans, 1955 V. chagres Nicolay, 1973 V. diana (Plötz, 1886) V. diversa (Herrich-Schäffer, 1869) V. drova Evans, 1955 V. fantasos (Stoll, 1780) V. fuldia (Bell, 1930) V. jabesa (Butler, 1870) V. klugi (Bell, 1941) V. lafrenaye (Latreille, 1824) V. lucretius (Latreille, 1824) V. marcus (Fabricius, 1787) V. monacha (Plötz, 1882) V. phyllus (Cramer, 1777) V. ploetzii (Capronnier, 1874) V. richardi (Weeks, 1906) V. tertianus (Herrich-Schäffer, 1869) V. triangularis (Geyer, 1831) V. umbrata (Erschoff, 1876) V. yalta Evans, 1955