Globally, Sedko (Седько 
, Sedko 
) is an extremely rare unknown gender first name. Predominantly, Sedko is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Седько | Kazakhstan, Belarus, Kyrgyzstan, Russia, Ukraine |
| Sedko | Estonia, Russia, Czechia, Ukraine |
| ernes sedko UZ (b. 1987) |
|