Strigiphilus is a genus of chewing louse in the suborder Ischnocera. It was circumscribed in 1910 by Eric Mjöberg.
Mjöberg initially circumscribed Strigiphilus as a subgenus of the genus he referred to as Docophorus (now known as Philopterus).
In a 1966 paper, Theresa Clay recognized 29 species and grouped them into the following nine species groups:
The largest group is the S. curstans group.
Strigiphilus is the only genus of Ischnocera to exclusively parasitize owls.
, there are approximately fifty species of Strigiphilus. Species include: