Echinorhynchidae is a family of acanthocephalan parasitic worms from the order Echinorhynchida.

The adult worms live in the intestines of fishes, amphibians and reptiles.

The family contains the following genera, organised by subfamily.

[2] In 2019, Kvach & de Buron added to the family a new species, Harpagorhynchus golvaneuzeti, which represents a new genus, Harpagorhynchus and a new subfamily, the Harpagorhynchinae.

[5] The specific epithet refers to two famous French parasitologists, Yves-Jean Golvan and Louis Euzet.