| Scientific name | Genome designation | Number of Chromosomes | Dispersion |
| Oryza sativa L. | AA | Diploid, 2n = 24 | Tropical, Subtropical and Temperate Regions |
| Oryza alta Swallen | CCDD | Tetraploid, 2n = 48 | Central and South America |
| Oryza australiensis Domin | EE | Diploid, 2n = 12 | Tropical Australia |
| Oryza barthii A. Chev. | AA | Diploid, 2n = 24 | Central, Oriental and Ocidental Africa |
| Oryza brachyantha A. Chev. et Rhoer. | FF | Diploid, 2n = 24 | Central, Ocidental, and Oriental Africa |
| Oryza coarctata Roxb. | HHKK | Tetraploid, 2n = 24 | Southern Asia and Myanmar |
| Oryza eichingeri A. Peter | CC | Diploid, 2n = 24 | Oriental Africa and Meridional Asia |
| Oryza glaberrima Steud. | AA | Diploid, 2n = 24 | Ocidental Africa |
| Oryza glumaepatula Steud. | AA | Diploid, 2n = 24 | Latin America |
| Oryza grandiglumis (Doell) Prod. | CCDD | Tetraploid, 2n = 48 | Latin America |
| Oryza granulate Nees et Arn. ex Wat | GG | Diploid, 2n = 24 | Continental Asia |
| Oryza indandamanica | GG | Diploid, 2n = 24 | Meridional Asia |
| Oryza latifolia Desv. | CCDD | Tetraploid, 2n = 48 | South and Central America |
| Oryza longiglumis Jansen | HHJJ | Tetraploid, 2n = 48 | Southern New Guinea |
| Oryza longistaminata Chev. et Roehr. | AA | Diploid, 2n = 24 | Tropical Africa |
| Oryza malampuzhaensis Krish. et Chand. | BBCC | Tetraploid, 2n = 48 | Meridional Asia |
| Oryza meridionalis Ng | AA | Diploid, 2n = 24 | Australia and New Guinea |
| Oryza meyeriana (Zoll. et Mor. ex Steud.) Baill. | GG | Diploid, 2n = 24 | Southeast Asia, Malaysian Peninsula |
| Oryza minuta J.S. Presl. Ex. C.B. Presl. | BBCC | Tetraploid, 2n = 48 | Philippines and New Guinea |
| Oryza neocaledonica Morat | GG (presumed) | Diploid, 2n = 24 (presumed) | New Caledonia |
| Oryza nivara Sharma et Shastry | AA | Diploid, 12 | Asia |
| Oryza officinalis Wall ex Watt | CC | Diploid, 12 | Asia and New Guinea |
| OryzapunctataKotschyexSteud. | BB, BBCC | Diploide and tetraploide, 2n = 24, 2n = 48 | Africa |
| Oryza rhizomatis Vaughan | CC | Diploid, 2n = 12 | Meridional Asia |
| Oryza ridleyi Hook. f. | HHJJ | Tetraploid, 2n = 48 | Asia |
| Oryza rufipogon Griff. | AA | Diploid, 2n = 24 | Continental Asia |
| Oryza schlechteri Pilger | HHKK (requires reconfirmation) | Tetraploid, 2n = 48 | New Guinea |