Jac is a Welsh variant transcription of Jack (English and Dutch).
Jac is also a variant transcription of Jax (English).
Jac is not popular as a baby boy name. It is not listed within the top 1000. In 2012, out of the family of boy names directly related to Jac, Jack was the most commonly used.
Baby names that sound like Jac include Jaac, Jack (English and Dutch), Jak, Jakk, J, J., Jace (English), Jach (Czech and Polish), Jacke, Jacks, Jacq, Jacs, Jae (English, Korean, and Indian), Jag, Jah, Jaice, Jaik, Jaike, Jake (English and Hebrew), and Jakeh (English).
† English pronunciation for Jac: JH as in "joy (JH.OY)" ; AH as in "mud (M.AH.D)" ; K as in "key (K.IY)"