| Syllis complanata Treadwell, 1901 |
| Syllis corallicola Verrill, 1900 |
| Syllis corallicoloides Augener, 1922 |
| Syllis cornuta Rathke, 1843 |
| Syllis danieli (San Martín, 1992) |
| Syllis deleoni Salcedo-Oropeza, San Martín & Solís-Weiss, 2012 |
| Syllis divaricata Keferstein, 1862 |
| Syllis elongata (Johnson, 1901) |
| Syllis fasciata (Malmgren, 1867) |
| Syllis ferrugina (Langerhans, 1881) |
| Syllis fertilis Verrill, 1900 |
| Syllis fulgurans Audouin & H. Milne-Edwards, 1833 |
| Syllis fuscosuturata Augener, 1922 |
| Syllis garciai (Campoy, 1982) |
| Syllis gerlachi (Hartmann-Schröder, 1960) |
| Syllis glarearia (Westheide, 1974) |
| Syllis gracilis Grube, 1840 |
| Syllis heterochaeta Moore, 1909 |
| Syllis hyalina Grube, 1863 |
| Syllis hyperioni Dorsey & Phillips, 1987 |