Muridae Illiger, 1815
Thomasomys apeco Leo L. & Gardner, 1993
Thomasomys aureus (Tomes, 1860)
Thomasomys baeops (Thomas, 1899)
Thomasomys bombycinus Anthony, 1925
Thomasomys caudivarius Anthony, 1923
Thomasomys cinereiventer J. A. Allen, 1912
Thomasomys cinereus (Thomas, 1882)
Thomasomys cinnameus Anthony, 1924
Thomasomys daphne Thomas, 1917
Thomasomys eleusis Thomas, 1926
Thomasomys erro Anthony, 1926
Thomasomys gracilis Thomas, 1917
Thomasomys hudsoni Anthony, 1923
Thomasomys hylophilus Osgood, 1912
Thomasomys incanus (Thomas, 1894)
Thomasomys ischyrus Osgood, 1914
Thomasomys ischyurus Osgood, 1914
Thomasomys kalinowskii (Thomas, 1894)
Thomasomys ladewi Anthony, 1926
Thomasomys laniger (Thomas, 1895)
Thomasomys macrotis Gardner & Romo R., 1993
Thomasomys monochromos Bangs, 1900
Thomasomys niveipes (Thomas, 1896)
Thomasomys notatus Thomas, 1917
Thomasomys onkiro Luna & Pacheco, 2002
Thomasomys oreas Anthony, 1926
Thomasomys paramorum Thomas, 1898
Thomasomys popayanus J. A. Allen, 1912
Thomasomys praetor Thomas, 1900
Thomasomys pyrrhonotus Thomas, 1886
Thomasomys rhoadsi Stone, 1914
Thomasomys rosalinda Thomas & St. Leger, 1926
Thomasomys silvestris Anthony, 1924
Thomasomys taczanowskii (Thomas, 1882)
Thomasomys ucucha Voss, 2003
Thomasomys vestitus (Thomas, 1898)
Thomasomys vulcani Thomas, 1898
