| Phaseolus neglectus F.J. Herm., 1948 |
| Phaseolus nelsonii Maréchal, Mascherpa & Stainier, 1978 |
| Phaseolus nodosus Freytag & Debouck, 2002 |
| Phaseolus novoleonensis Debouck, 2006 |
| Phaseolus oaxacanus Rose, 1903 |
| Phaseolus obliquifolius Mart. ex Benth., 1837 |
| Phaseolus oblongus Savi, 1825 |
| Phaseolus obvallatus Schltdl., 1838 |
| Phaseolus occidentalis Rose, 1905 |
| Phaseolus oligospermus Piper, 1926 |
| Phaseolus opacus Piper, 1926 |
| Phaseolus ovatifolius Piper, 1926 |
| Phaseolus ovatus Benth., 1837 |
| Phaseolus pachycarpus Standl., 1940 |
| Phaseolus palmeri Piper, 1926 |
| Phaseolus parabolicus Nutt. ex W.P.C. Barton, 1818 |
| Phaseolus parviflorus Schltdl., 1838 |
| Phaseolus parvifolius Freytag, 2002 |
| Phaseolus parvulus Greene, 1881 |
| Phaseolus pascuorum Mart. ex Benth., 1837 |