The 79 accepted and known species of Nicotiana include:
- Nicotiana acaulis <small>Speg.</small>
- Nicotiana acuminata <small>(Graham) Hook.</small> – manyflower tobacco, many-flowered tobacco
- Nicotiana africana <small>Merxm.</small>
- Nicotiana alata <small>Link & Otto</small> – jasmine tobacco, sweet tobacco, winged tobacco, Persian tobacco, tanbaku (Persian)
- Nicotiana ameghinoi <small>Speg.</small>
- Nicotiana amplexicaulis <small>N. T. Burb.</small>
- Nicotiana arentsii <small>Goodsp.</small>
- Nicotiana attenuata <small>Torrey ex S. Watson</small> – coyote tobacco
- Nicotiana azambujae <small>L. B. Smith & Downs</small>
- Nicotiana benavidesii <small>Goodsp.</small>
- Nicotiana benthamiana <small>Domin</small> – benth, benthi
- Nicotiana bonariensis <small>Lehm.</small>
- Nicotiana burbidgeae <small>Symon</small>
- Nicotiana cavicola <small>N. T. Burb.</small>
- Nicotiana clevelandii <small>A. Gray</small> – Cleveland's tobacco
- Nicotiana cordifolia <small>Phil.</small>
- Nicotiana corymbosa <small>J. Rémy</small>
- Nicotiana cutleri <small>D'Arcy</small>
- Nicotiana excelsior <small>(J. M. Black) J. M. Black</small>
- Nicotiana forgetiana <small>Hemsl.</small>
- Nicotiana forsteri <small>Roem. & Schult.</small> (previously designated N. debneyi)
- Nicotiana fragrans <small>Hooker</small>
- Nicotiana glauca <small>Graham</small> – tree tobacco, Brazilian tree tobacco, shrub tobacco, wild tobacco, tobacco plant, tobacco bush, tobacco tree, mustard tree
- Nicotiana glutinosa <small>L.</small>
- Nicotiana goodspeedii <small>H.-M. Wheeler</small>
- Nicotiana gossei <small>Domin</small>
- Nicotiana hesperis <small>N. T. Burb.</small>
- Nicotiana heterantha <small>Kenneally & Symon</small>
- Nicotiana ingulba <small>J. M. Black</small>
- Nicotiana kawakamii <small>Y. Ohashi</small>
- Nicotiana knightiana <small>Goodsp.</small>
- Nicotiana langsdorffii <small>Weinm.</small> – Langsdorff's tobacco
- Nicotiana linearis <small>Phil.</small>
- Nicotiana longibracteata <small>Phil.</small>
- Nicotiana longiflora <small>Cav.</small> – longflower tobacco, long-flowered tobacco
- Nicotiana maritima <small>H.-M. Wheeler</small>
- Nicotiana megalosiphon <small>Van Huerck & Müll. Arg.</small>
- Nicotiana miersii <small>J. Rémy</small>
- Nicotiana mutabilis <small>Stehmann & Samir</small>– color-changing tobacco, flowering tobacco
- Nicotiana nesophila <small>I. M. Johnston</small>
- Nicotiana noctiflora <small>Hook.</small>
- Nicotiana nudicaulis <small>S. Watson</small>
- Nicotiana occidentalis <small>H.-M. Wheeler</small> – native tobacco
- Nicotiana obtusifolia <small>M. Martens & Galeotti</small> (previously designated N. trigonophylla) – desert tobacco, punche, "tabaquillo"
- Nicotiana otophora <small>Griseb.</small>
- Nicotiana paa <small>Mart. Crov.</small>
- Nicotiana palmeri <small>A. Gray</small>
- Nicotiana paniculata <small>L.</small> – smallflower tobacco, small-flowered tobacco
- Nicotiana pauciflora <small>J. Rémy</small>
- Nicotiana petuniodes <small>(Griseb.) Millán.</small>
- Nicotiana plumbaginifolia <small>Viv.</small> – Tex-Mex tobacco
- Nicotiana quadrivalvis <small>Pursh</small> (replaces the following older classifications: N. multivalvis Lindl., N. plumbaginifolia Viv. var. bigelovii Torrey, N. bigelovii (Torrey) S. Watson) – Indian tobacco
- Nicotiana raimondii <small>J. F. Macbr.</small>
- Nicotiana repanda <small>Willd.</small> – fiddleleaf tobacco, fiddle-leafed tobacco
- Nicotiana rotundifolia <small>Lindl.</small>
- Nicotiana rustica <small>L.</small> – Aztec tobacco, strong tobacco, mapacho
- Nicotiana setchellii <small>Goodsp.</small>
- Nicotiana simulans <small>N. T. Burb.</small>
- Nicotiana solanifolia <small>Walp.</small>
- Nicotiana spegazzinii <small>Millán</small>
- Nicotiana stenocarpa <small>H.-M. Wheeler</small>
- Nicotiana stocktonii <small>Brandegee</small>
- Nicotiana suaveolens <small>Lehm.</small> – Australian tobacco
- Nicotiana sylvestris <small>Speg. & Comes</small> – woodland tobacco, flowering tobacco, South American tobacco
- Nicotiana tabacum <small>L.</small> – common tobacco, domesticated tobacco, cultivated tobacco, commercial tobacco (grown for the production of cigars, cigarillos, cigarettes, chewing tobacco, dipping tobacco, snuff, snus, etc.)
- Nicotiana thrysiflora <small>Bitter ex Goodsp.</small>
- Nicotiana tomentosa <small>Ruiz & Pav.</small>
- Nicotiana tomentosiformis <small>Goodsp.</small>
- Nicotiana truncata <small>D. E. Symon</small>
- Nicotiana umbratica <small>N. T. Burb.</small>
- Nicotiana undulata <small>Ruiz & Pav.</small>
- Nicotiana velutina <small>H.-M. Wheeler</small>
- Nicotiana wigandioides <small>Koch & Fintelm.</small>
- Nicotiana wuttkei <small>Clarkson & Symon</small>
Five additional species that are listed by APNI are:
References