| Dahlia congestifolia P.D. Sørensen, 1987 |
| Dahlia cordifolia (Sessé & Moc.) McVaugh, 2000 |
| Dahlia coronata Sprague, 1929 |
| Dahlia cuspidata Saar, P.D. Sørensen & Hjert., 2003 |
| Dahlia dissecta S. Watson, 1891 |
| Dahlia dissecta var. dissecta S. Watson, 1891 |
| Dahlia dissecta var. sublignosa P.D. Sørensen, 1969 |
| Dahlia excelsa Benth., 1828 |
| Dahlia excelsa var. anemonaeflora Benth., 1827 [1828] |
| Dahlia foeniculifolia Sherff, 1951 |
| Dahlia gypsicola J. Reyes, Ortiz-Brunel & Art. Castro, 2024 |
| Dahlia hintonii Sherff, 1947 |
| Dahlia hjertingii H.V. Hansen & P.D. Sørensen, 2003 |
| Dahlia imperialis Roezl ex Ortgies, 1863 |
| Dahlia linearis Sherff, 1930 |
| Dahlia macdougallii Sherff, 1950 |
| Dahlia merckii Lehm., 1839 |
| Dahlia mixtecana J. Reyes, Islas & Art. Castro, 2019 |
| Dahlia mollis P.D. Sørensen, 1969 |
| Dahlia moorei Sherff, 1951 |