| Nicotiana obtusifolia var. obtusifolia M. Martens & Galeotti, 1845 |
| Nicotiana palmeri A. Gray, 1878 |
| Nicotiana pilosa Dunal, 1852 |
| Nicotiana plumbaginifolia Viv., 1802 |
| Nicotiana repanda Willd. ex Lehm., 1818 |
| Nicotiana rustica L., 1753 |
| Nicotiana stocktonii Brandegee, 1899 |
| Nicotiana tabacum L., 1753 |
| Nicotiana trigonophylla Dunal, 1852 |
| Nicotianeae G. Don, 1838 |
| Nierembergia Ruiz & Pav., 1794 |
| Nierembergia angustifolia Kunth, 1818 |
| Nierembergia petunioides Dunal, 1852 |
| Nierembergia viscosa Torr., 1859 |
| Noctiflorae Goodsp., 1945 |
| Pachyphylla Dunal, 1813 |
| Parascopolia Baill., 1888 |
| Parascopolia acapulcensis Baill., 1888 |
| Perennans Bitter, 1919 |
| Periloba Raf., 1836 |