| Agave (Littaea) funkiana K. Koch & Bouché, 1860 |
| Agave (Littaea) garciaruizii A. Vázquez, Hern.-Vera & Padilla-Lepe, 2019 |
| Agave (Littaea) geminiflora (Tagl.) Ker Gawl., 1817 |
| Agave (Littaea) geminiflora var. sonorae Torr., 1859 |
| Agave (Littaea) ghiesbreghtii Lem. ex Jacobi, 1864 |
| Agave (Littaea) ghiesbreghtii var. peacockii (Croucher) A. Terracc., 1885 |
| Agave (Littaea) gilbeyi Haage & Schmidt, 1873 |
| Agave (Littaea) glaucescens Hook., 1862 |
| Agave (Littaea) gracielae Galván & Zamudio, 2013 |
| Agave (Littaea) guiengola Gentry, 1960 |
| Agave (Littaea) gypsicola García-Mend.& D. Sandoval, 2019 |
| Agave (Littaea) hanburyi Baker, 1892 |
| Agave (Littaea) hartmanii S. Watson, 1891 |
| Agave (Littaea) haseloffii Jacobi, 1866 |
| Agave (Littaea) haynaldii Tod., 1878 |
| Agave (Littaea) heteracantha Baker, 1877 |
| Agave (Littaea) heteracantha var. glomeruliflora Engelm., 1883 |
| Agave (Littaea) horrida Lem. ex Jacobi, 1864 |
| Agave (Littaea) horrida subsp. horrida Lem. ex Jacobi, 1864 |
| Agave (Littaea) horrida subsp. perotensis Ullrich, 1990 |