Callirhytis quercusfutilis, the oak wart gall wasp, is a species of gall wasp in the family Cynipidae.

[1] Range is central and eastern North America.

[1] The agamic generation lives in the scurfy bark of a host white oak tree root or trunk base.

[3] The sexual generation induces galls on host white oak leaves, between leaf veins and projecting slightly above both surfaces of the leaf.

[2]: 343 Internally, thin radiating fibers connect the larval chamber to the wall of the gall, providing the larva with nutrients supplied by the host.