Species (25)
- Thomasomys aureus (Tomes, 1860)
- Thomasomys baeops (Thomas, 1899)
- Thomasomys cinereus (Thomas, 1882)
- Thomasomys cinereiventer J.A. Allen, 1912
- Thomasomys dorsalis (Hensel, 1872)
- Thomasomys gracilis Thomas, 1917
- Thomasomys incanus (Thomas, 1894)
- Thomasomys ischyurus Osgood, 1914
- Thomasomys ladewi Anthony, 1926
- Thomasomys vestitus (Thomas, 1898)
- Thomasomys kalinowskii (Thomas, 1894)
- Thomasomys paramorum Thomas, 1898
- Thomasomys monochromos Bangs, 1900
- Thomasomys notatus Thomas, 1917
- Thomasomys pyrrhonotus Thomas, 1886
- Thomasomys taczanowskii (Thomas, 1882)
- Thomasomys rhoadsi Stone, 1914
- Thomasomys oreas Anthony, 1926
- Thomasomys daphne Thomas, 1917
- Thomasomys laniger (Thomas, 1895)
- Thomasomys bombycinus Anthony, 1925
- Thomasomys oenax Thomas, 1928
- Thomasomys hylophilus Osgood, 1912
- Thomasomys rosalinda Thomas & St. Leger, 1926
- Thomasomys pictipes Osgood, 1933