Updated June 9, 2019 Find Baby Names Girl name origins & meanings Japanese : Gratitude Boy name origins & meanings Japanese : LawLatin : King Boy name variations Rex Rex - 1% this year Masculine Rare READ MORE DETAILS Roi Roi - 9% this year Masculine Rare READ MORE DETAILS Rexford Rexford - 14% this year Masculine Rare READ MORE DETAILS Rexer Rexer 0 % this year Masculine Rare READ MORE DETAILS How Popular Is The Name Rei