| Agave (Agave) sobria Brandegee, 1889 |
| Agave (Agave) sobria subsp. frailensis Gentry, 1978 |
| Agave (Agave) sobria subsp. roseana (Trel.) Gentry, 1978 |
| Agave (Agave) sobria subsp. sobria Brandegee, 1889 |
| Agave (Agave) sobria var. roseana (Trel.) I.M. Johnst., 1924 |
| Agave (Agave) spectabilis Tod., 1879 |
| Agave (Agave) stringens Trel., 1920 |
| Agave (Agave) subfalcata Jacobi, 1869 |
| Agave (Agave) subsimplex Trel., 1911 |
| Agave (Agave) subtilis Trel., 1920 |
| Agave (Agave) subzonata Trel., 1920 |
| Agave (Agave) sullivanii Trel., 1920 |
| Agave (Agave) tehuacanensis Karw. ex Salm-Dyck, 1859 |
| Agave (Agave) tenuispina Trel., 1915 |
| Agave (Agave) tequilana F.A.C. Weber, 1902 |
| Agave (Agave) todaroi Baker, 1888 |
| Agave (Agave) tortispina Trel., 1915 |
| Agave (Agave) turneri R.H. Webb & Salazar-Ceseña, 2011 |
| Agave (Agave) valenciana Cházaro & A. Vázquez, 2005 |
| Agave (Agave) vernae A. Berger, 1915 |