Around the globe, Eyder (Eyder 
) is quite a rare predominantly masculine, but very seldom feminine first name. The forename Eyder is characteristic of Latin America and the Caribbean, particularly Nicaragua, where it is quite a rare mostly boy's, but uncommonly female name, Colombia, where it is a rare male name, and Panama. Measured by absolute frequency, it is commonest in Latin America and the Caribbean, particularly Colombia, Mexico, and Brazil. Much less frequently, Eyder is the last name as well as the forename.
Eyder is also a name for the fictitious and mythical characters: .