| Tillandsia sparsiflora Baker, 1890 |
| Tillandsia spinosa Sessé & Moc., 1894 |
| Tillandsia staticeflora E. Morren, 1871 |
| Tillandsia strobilantha Baker, 1888 |
| Tillandsia strobilifera E. Morren ex Baker, 1889 |
| Tillandsia subimbricata Baker, 1887 |
| Tillandsia sublaxa Baker, 1887 |
| Tillandsia subulata E. Morren ex Baker, 1889 |
| Tillandsia sueae Ehlers, 1991 |
| Tillandsia supermexicana Matuda, 1977 |
| Tillandsia supermexicana var. pendula L. Hrom., 1993 |
| Tillandsia supermexicana var. saxicola L. Hrom., 1993 |
| Tillandsia supermexicana var. supermexicana Matuda, 1977 |
| Tillandsia takizawae Ehlers & H. Luther, 2000 |
| Tillandsia teloloapanensis Ehlers & Lautner, 2009 |
| Tillandsia tenuifolia L., 1753 |
| Tillandsia tephrophylla Harms, 1929 |
| Tillandsia tephrophylla var. guzmanioides (L.B. Sm.) Rohweder, 1956 |
| Tillandsia tequilana Hern.-Cárdenas, Flores-Arg., Espejo & López-Ferr., 2024 |
| Tillandsia tillii Ehlers, 1992 |