| Solanum anacanthum Dunal, 1852 |
| Solanum andrieuxi Dunal, 1852 |
| Solanum antillarum O.E. Schulz, 1909 |
| Solanum antipovichi Bukasov ex Rybin, 1929 |
| Solanum antipovichi var. neoantipovichii (Bukasov) Hawkes, 1944 |
| Solanum arcuatum Sendtn., 1846 |
| Solanum arizonicum Parish, 1901 |
| Solanum armentalis J.L. Gentry & D'Arcy, 1977 |
| Solanum arrazolense J.M. Coult. & Donn. Sm., 1904 |
| Solanum asperolanatum Ruiz & Pav., 1799 |
| Solanum asperum Rich., 1792 |
| Solanum aviculare G. Forst., 1786 |
| Solanum azureum Fernald, 1900 |
| Solanum bahamense L., 1753 |
| Solanum belizense Lundell, 1942 |
| Solanum bicolor Willd. ex Roem. & Schult., 1819 |
| Solanum bicorne Dunal, 1852 |
| Solanum blodgettii Chapm., 1860 |
| Solanum boreale (A. Gray) Bitter, 1912 |
| Solanum brachistotrichum (Bitter) Rydb., 1924 |