Ophiacanthida is an order of echinoderms belonging to the class Ophiuroidea.

The order contains two suborders, Ophiodermatina and Ophiacanthina, which include the following families:

• Ophiodermatina Ljungman, 1867
  • Ophiodermatidae
  • Ophiomyxidae
  • Ophiopezidae
  • Ophiocomidae
• Ophiacanthina O'Hara, Hugall, Thuy, Stöhr & Martynov, 2017
  • Clarkcomidae
  • Ophiacanthidae
  • Ophiobyrsidae
  • Ophiocamacidae
  • Ophiopteridae
  • Ophiotomidae
  • Ophiojuridae

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