| Phaseolus retusus Benth., 1839 |
| Phaseolus retusus Moench, 1794 |
| Phaseolus revolutus Piper, 1926 |
| Phaseolus rigidus Piper, 1926 |
| Phaseolus ritensis M.E. Jones, 1908 |
| Phaseolus robiniiflorus Standl., 1940 |
| Phaseolus romanus Savi, 1825 |
| Phaseolus rosei Piper, 1926 |
| Phaseolus rotundatus Freytag & Debouck, 2002 |
| Phaseolus rotundifolius A. Gray, 1853 |
| Phaseolus rubescens Brandegee, 1903 |
| Phaseolus rufus Jacq., 1770 |
| Phaseolus saccharatus Stokes, 1812 |
| Phaseolus saccharatus Macfad., 1837 |
| Phaseolus saccharatus Moench, 1794 |
| Phaseolus salicifolius Piper, 1926 |
| Phaseolus sanctorum M.E. Jones, 1929 |
| Phaseolus saponaceus Savi, 1825 |
| Phaseolus savannarum Britton & P. Wilson, 1920 |
| Phaseolus scabrellus Benth. ex S. Watson, 1882 |