| Epidendrum cobanense Ames & Schltr., 1923 |
| Epidendrum cochleatum L., 1763 |
| Epidendrum cochleatum var. costaricense Schltr., 1923 |
| Epidendrum cochleatum var. triandrum Ames, 1904 |
| Epidendrum comayaguense Ames, 1933 |
| Epidendrum concolor Lex., 1825 |
| Epidendrum confusum Rolfe, 1899 |
| Epidendrum congestoides Ames & C. Schweinf., 1930 |
| Epidendrum conopseum R. Br., 1813 |
| Epidendrum conopseum var. mexicanum L.O. Williams, 1951 |
| Epidendrum cordigerum (Kunth) Foldats, 1969 |
| Epidendrum coriifolium Lindl., 1851 |
| Epidendrum corniculatum Sw., 1788 |
| Epidendrum coronatum Ruiz & Pav., 1798 |
| Epidendrum costatum A. Rich. & Galeotti, 1845 |
| Epidendrum crispatum Knowles & Westc., 1838 |
| Epidendrum crispilabium A. Rich. & Galeotti, 1845 |
| Epidendrum cristatum Ruiz & Pav., 1798 |
| Epidendrum cucullatum L., 1763 |
| Epidendrum culmiforme Schltr., 1912 |