| Eleocharis atropurpurea (Retz.) J. Presl & C. Presl, 1828 |
| Eleocharis bella (Piper) Svenson, 1929 |
| Eleocharis berlandieri (Britton) C.B. Clarke, 1900 |
| Eleocharis bernardina (Munz & I.M. Johnst.) Munz & I.M. Johnst., 1935 |
| Eleocharis bicolor Chapm., 1860 |
| Eleocharis bolanderi A. Gray, 1867 |
| Eleocharis bonariensis Nees, 1840 |
| Eleocharis brachycarpa Svenson, 1929 |
| Eleocharis calyptrata (Liebm.) Steud., 1855 |
| Eleocharis cancellata S. Watson, 1883 |
| Eleocharis capitata (L.) R. Br., 1810 |
| Eleocharis caribaea (Rottb.) S.F. Blake, 1918 |
| Eleocharis cellulosa Torr., 1836 |
| Eleocharis coloradoensis (Britton) Gilly, 1941 |
| Eleocharis constricta Schult., 1824 |
| Eleocharis costaricensis Boeckeler, 1896 |
| Eleocharis crassiculmis (Nees) Steud., 1855 |
| Eleocharis cryptica Saarela, P.M. Peterson, S. González & D.J. Rosen, 2010 |
| Eleocharis cyperina (Willd.) Roem. & Schult., 1817 |
| Eleocharis densa Benth., 1840 |