Prionocidaris is a genus of echinoderms belonging to the family Cidaridae.

The genus has almost cosmopolitan distribution.

Species:

• Prionocidaris anacachoensis Thompson, 2016
• Prionocidaris australis (Ramsay, 1885)
• Prionocidaris baculosa (Lamarck, 1816)
• Prionocidaris bispinosa (Lamarck, 1816)
• Prionocidaris callista Rowe & Hoggett, 1986
• Prionocidaris cookei Cutress, 1976
• Prionocidaris glandulosa (De Meijere, 1904)
• Prionocidaris haasti Fell, 1954
• Prionocidaris hawaiiensis (A.Agassiz & H.L.Clark, 1907)
• Prionocidaris katherinae Cutress, 1980
• Prionocidaris malindiensis Stephenson, 1968
• Prionocidaris marchalli Fell, 1954
• Prionocidaris neglecta Smith & Wright, 1989
• Prionocidaris pawpawensis Thompson, 2016
• Prionocidaris pistillaris (Lamarck, 1816)
• Prionocidaris popeae Hoggett & Rowe, 1986
• Prionocidaris praeverticillata Stephenson, 1968
• Prionocidaris scoparia Chapman & Cudmore, 1934
• Prionocidaris thomasi (A.Agassiz & H.L.Clark, 1907)

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