See also the related category turkish.
Onann is not often used as a baby boy name. It is listed outside of the top 1000.
Baby names that sound like Onann include Ohin, Ohine, Omen (Hebrew), Omi, Omni (English), Omy, Onan, Oni, Owaene, Owain (English, Gaelic, and Welsh), Owaine, Owane, Owayn, Owayne, Owein, Oweine, Owenn, Owenne, Owin, and Owine.
† approx English pronunciation for Onann: OW as in "oak (OW.K)" ; N as in "knee (N.IY)" ; AA as in "odd (AA.D)"