| Poa lugens (Nees) Kunth, 1833 |
| Poa macounii Vasey, 1888 |
| Poa magensiana Potztal, 1959 |
| Poa matris-occidentalis P.M. Peterson & Soreng, 2006 |
| Poa matris-occidentalis subsp. matris-occidentalis P.M. Peterson & Soreng, 2006 |
| Poa matris-occidentalis subsp. mohinorensis Soreng & P.M. Peterson, 2006 |
| Poa maydelii Roshev., 1932 |
| Poa maypurensis Kunth, 1815 |
| Poa mexicana Lag., 1816 |
| Poa meyenii Nees & Meyen, 1841 |
| Poa michauxii Kunth, 1829 |
| Poa microstachya Link, 1827 |
| Poa montana Vasey, 1874 |
| Poa mulleri Swallen, 1940 |
| Poa nemoralis L., 1753 |
| Poa nervata Willd., 1797 |
| Poa nevadensis Vasey ex Scribn., 1883 |
| Poa nitida Elliott, 1816 |
| Poa nuttallii Kunth, 1829 |
| Poa obtusata (Michx.) Link, 1827 |