See also the related category sanskrit.
Yaj is not regularly used as a baby name for boys. It is not listed in the top 1000 names.
Baby names that sound like Yaj include Yaak (Russian), Yas, Yash (Indian), Yashe, Yashee, Yoash (Hebrew), Yog (Indian), Yoge, Yogesh, Jaak (Estonian), Jaece, Jaze, Joes, Jos, Jóska, Ukko, Uko, Uku, Ukya, and Ukyah.
† approx English pronunciation for Yaj: Y as in "you (Y.UW)" ; AA as in "odd (AA.D)" ; JH as in "joy (JH.OY)"