Ethan Kos
| Complete name: | Ethan Kos |
| Date of birth: | June 28, 2001 |
| Place of birth: | California |
| Height: | 1.85m (6ft 1in) |
| Nationality: | American |
| Position: | CB |
| Foot: | Left |
| Current club: | Richmond Kickers |
Ethan Kos is an American defender for Richmond Kickers of the USL League 1. Kos spent the 2023 and 2024 seasons in the Irish 1st division with Kerry FC. Kos made the move back to the United States with Birmingham Legion FC.