The genus name Acanthonotus may refer to:

  • Acanthonotus Gray, 1830 = Ailia Gray, 1830 (Animalia, Actinopterygii, Ailiidae)
  • Acanthonotus Bloch & Schneider, 1801 = Notacanthus Bloch, 1788 (Animalia, Actinopterygii, Notacanthidae)
  • Acanthonotus Koch, 1848 = Syleus Thorell, 1876 (Animalia, Arachnida, Sclerosomatidae)