| Phaseolus macropoides A. Gray, 1853 |
| Phaseolus macropus Benth., 1837 |
| Phaseolus maculatifolius Freytag & Debouck, 2002 |
| Phaseolus maculatus Scheele, 1848 |
| Phaseolus maculatus Mart., 1829 |
| Phaseolus maculatus subsp. maculatus Scheele, 1848 |
| Phaseolus maculatus subsp. ritensis (M.E. Jones) Freytag, 2002 |
| Phaseolus maculatus var. maculatus Scheele, 1848 |
| Phaseolus macvaughii A. Delgado, 2000 |
| Phaseolus magnilobatus Freytag & Debouck, 2002 |
| Phaseolus marechalii A. Delgado, 2000 |
| Phaseolus membranaceus Benth., 1837 |
| Phaseolus menispermoideus (DC.) Eaton & Wright, 1840 |
| Phaseolus metcalfei Wooton & Standl., 1913 |
| Phaseolus micranthus Hook. & Arn., 1838 |
| Phaseolus micranthus M. Martens & Galeotti, 1843 |
| Phaseolus microcarpus Mart., 1831 |
| Phaseolus monospermus B.L. Rob. & Greenm., 1894 |
| Phaseolus montanus Brandegee, 1891 |
| Phaseolus multiflorus Lam., 1789 |