Migmanychion (meaning "claw mixture") is an extinct genus of maniraptoran theropod dinosaur from the Early Cretaceous Longjiang Formation of China.

[1] The Migmanychion holotype specimen, LY 2022JZ3001, was discovered in sediments of the Longjiang Formation (Pigeon Hill locality), near Baoshan in Morin Dawa Daur Autonomous Banner, Inner Mongolia, China.

The specimen consists of rib fragments and a partial left arm with a complete hand, preserved on a slab and counterslab.

The generic name, "Migmanychion", combines the Greek words "μείγμα νυχιών", meaning "claw mixture", referencing the difference in the morphology of the manual unguals.

It coexisted with other dinosaurs including the dromaeosaurid Daurlong,[2] indeterminate paravians,[1] and the avialans Beiguornis (an enantiornithean)[3] and Khinganornis (an ornithuromorph),[4] as well as fish and amphibians.