Updated June 9, 2019 Share: Boy name origins & meanings Latin : KingOld French : Regal one Boy name variations Rex Rex - 1% this year Masculine Rare Find out more Rei Rei - 40% this year Neutral Rare Find out more Rexford Rexford - 14% this year Masculine Rare Find out more Rexer Rexer 0 % this year Masculine Rare Find out more Roy Roy - 2% this year Masculine Uncommon Find out more Royal Royal - 2% this year Neutral Uncommon Find out more Royale Royale - 3% this year Masculine Rare Find out more Royall Royall 0 % this year Masculine Rare Find out more Roye Roye 0 % this year Masculine Rare Find out more How Popular Is The Name Roi