Latenivenatrix, meaning "hiding huntress", is a genus of large troodontid known from a single species, L. mcmasterae.

[1] The type specimen, or holotype, of Latenivenatrix (CMN 12340) was originally described in 1969 by Dale Alan Russell and referred by him to the genus Stenonychosaurus.

The specimen has preserved some skull bones, such as the frontals, parietals, postorbital, basioccipital, and basisphenoid, four vertebrae, four ribs, some chevrons, gastralia, a fairly complete arm, and incomplete legs.

[1] Latenivenatrix was found to be a derived troodontid (part of the newly defined Troodontinae), probably related to coeval Asian forms such as Linhevenator and Philovenator.

One hatchling specimen may have suffered from a congenital defect, which resulted in the front part of its jaw being twisted.