• Sicyosus Jordan & Evermann, 1898 accepted as Sicydium Valenciennes in Cuvier & Valenciennes, 1837
• Sindesus Casey, 1922
• Sindolus Sharp, 1882
• Sinisus Heude, 1892 accepted as Sus Linnaeus, 1758
• Sinolus Mulsant, 1863 accepted as Molorchus Fabricius, 1792
• Sinorus Mulsant & Revelière, 1860
• Sinuchus Desmarest in Chenu, 1851-22 accepted as Synuchus Gyllenhal, 1810
• Sinuconus Yu, 1979 † (uncertain)
• Sinuijus Fang & So, 2020 †
• Sinurus Chaudoir, 1869
• Siruasus Roewer, 1962