Tamarro (named after a mythological creature in local culture) is a genus of troodontid theropod from the Late Cretaceous Talarn Formation (Tremp Group) of Spain.

[1] The holotype of Tamarro, MCD-7073, a metatarsal, was found in 2003 at the Sant Romà d'Abella site, belonging to the Talarn Formation of the Tremp Group.

In 2021, Sellés et al. described it as a new genus and species, Tamarro insperatus; the generic name is that of a small creature in the folklore of Pallars, Spain, while the specific name means "unexpected", referring to the unexpected discovery of the fossil.

[1] Sellés et al. placed Tamarro in the Jinfengopteryginae, making it the first member of the subfamily from Europe.

[1] Tamarro lived on the Ibero-Armorican Island, and its discovery increases knowledge about the diversity of small theropods on the Cretaceous European archipelago.