| Tillandsia melanocrater L.B. Sm., 1937 |
| Tillandsia melanopus E. Morren ex Mez, 1896 |
| Tillandsia mexicana L.B. Sm., 1938 |
| Tillandsia minuscula (Hern.-Cárdenas, Espejo & López-Ferr.) Gouda, 2025 |
| Tillandsia mitlaensis W. Weber & Ehlers, 1983 |
| Tillandsia mitlaensis var. tulensis Lautner & Ehlers, 2001 |
| Tillandsia mixtecorum Ehlers & Koide, 1998 |
| Tillandsia modesta Mez, 1935 |
| Tillandsia monostachya W. Bartram, 1791 |
| Tillandsia monostachys Gillies ex Baker, 1878 |
| Tillandsia moronesensis Ehlers, 2000 |
| Tillandsia myriophylla Small, 1933 |
| Tillandsia nayelyana R. García Mart. & Beutelsp., 2017 |
| Tillandsia nicolasensis Ehlers, 2006 |
| Tillandsia nitida Hook., 1827 |
| Tillandsia nolleriana Ehlers, 1986 |
| Tillandsia novakii H. Luther, 1991 |
| Tillandsia nutans Sw., 1788 |
| Tillandsia nuttalliana Schult. & Schult. f., 1830 |
| Tillandsia nuyooensis Ehlers, 1989 |