| Ipomoea murucoides Roem. & Schult., 1819 |
| Ipomoea mutabilis Ker Gawl., 1815 |
| Ipomoea neei (Spreng.) O'Donell, 1959 |
| Ipomoea neurocephala Hallier f., 1899 |
| Ipomoea nil (L.) Roth, 1797 |
| Ipomoea noctulifolia McPherson, 1980 |
| Ipomoea nuda Peter, 1891 |
| Ipomoea nutans Moc. & Sessé ex Choisy, 1845 |
| Ipomoea oligantha Choisy, 1845 |
| Ipomoea oocarpa Benth., 1845 |
| Ipomoea oreophila House, 1908 |
| Ipomoea orizabensis (Pelletan) Steud., 1841 |
| Ipomoea orizabensis var. collina (House) J.A. McDonald, 2001 |
| Ipomoea orizabensis var. orizabensis (Pelletan) Steud., 1841 |
| Ipomoea painteri House, 1907 |
| Ipomoea parasitica (Kunth) G. Don, 1838 |
| Ipomoea passifloroides House, 1908 |
| Ipomoea patens (A. Gray) House, 1908 |
| Ipomoea pauciflora M. Martens & Galeotti, 1845 |
| Ipomoea pauciflora subsp. pauciflora M. Martens & Galeotti, 1845 |