Feistiellaceae is a family of freshwater green algae in the order Charales.
, AlgaeBase and Fossilworks accepted three genera:
With this circumscription, the family as a whole is not extinct, since Nitellopsis contains living (extant) species, including the widely dispersed Nitellopsis obtusa. Other sources place Nitellopsis in the family Characeae, leaving Feistiellaceae with only extinct genera.