Chionomus is a genus of delphacid planthoppers in the family Delphacidae. There are about 14 described species in Chionomus. They are found in North, Central, and South America, including the Caribbean.

Species: These species belong to the genus Chionomus:

• Chionomus balboae (Muir & Giffard, 1924)
• Chionomus banosensis (Muir, 1926)
• Chionomus bellicosus (Muir & Giffard, 1924)
• Chionomus cultus (Van Duzee, 1907)
• Chionomus dissipatus (Muir, 1926)
• Chionomus dolonus Weglarz & Bartlett 2020
• Chionomus gluciophilus (Muir, 1926)
• Chionomus havanae (Muir & Giffard, 1924)
• Chionomus haywardi (Muir, 1929)
• Chionomus herkos Weglarz & Bartlett 2020
• Chionomus pacificus (Crawford, 1914)
• Chionomus puellus (Van Duzee, 1897)
• Chionomus quadrispinosus (Muir & Giffard, 1924)
• Chionomus tenae (Muir, 1926)