See also the related category mapuche.
Neyen is not widely used as a baby name for boys. It is not in the top 1000 names.
Baby names that sound like Neyen include Nae, Naeam, Naeim, Nahuem, Nai, Naiym, Nam (Vietnamese), Nanne (German and Scandinavian), Naomhán (Irish), Naum (German, Russian, and Slavic), Nay, Naye, Naym, Nehuen (Spanish), Nenn, Nenne (Scandinavian), Nesse, New, Nie, and Nim.
† approx English pronunciation for Neyen: N as in "knee (N.IY)" ; AY as in "side (S.AY.D)"