| Paspalum intermedium Munro ex Morong & Britton, 1893 |
| Paspalum intonsum Swallen, 1967 |
| Paspalum involutum Swallen, 1967 |
| Paspalum jaliscanum Chase, 1913 |
| Paspalum karwinskyii E. Fourn., 1886 |
| Paspalum kisantuense Vanderyst, 1918 |
| Paspalum lachneum Trin. ex Döll, 1877 |
| Paspalum laeviglume Scribn. ex Nash, 1903 |
| Paspalum lagascae Roem. & Schult., 1817 |
| Paspalum lanceolatum J.G. Mikan ex Trin., 1821 |
| Paspalum langei (E. Fourn.) Nash, 1912 |
| Paspalum laticulmum Spreng., 1825 |
| Paspalum latifolium Spreng., 1825 |
| Paspalum lenormandii Husn., 1871 |
| Paspalum lenticulare Kunth, 1815 |
| Paspalum lenticulare f. intumescens (Döll) Killeen, 1990 |
| Paspalum lentiginosum J. Presl, 1830 |
| Paspalum leptachne Chase, 1929 |
| Paspalum lepton Schult., 1824 |
| Paspalum leucocheilum C. Wright, 1871 |