Worldwide, Senko (Senko 
, Сенько 
, Сенко 
) is quite a rare gender-neutral first name. The first name Senko is characteristic of Croatia, where it is quite a rare masculine name, Ethiopia, where it is a rare boy's name, and Bulgaria. Measured by absolute frequency, it most frequently occurs in Ethiopia, Japan, and Croatia. More prevalently, Senko is the last name as well as the forename.