Updated June 9, 2019 Share: Boy name origins & meanings Latin : Rejoice; variation of Gaius Boy name variations Caius Caius + 9% this year Masculine Rare Find out more Cai Cai + 18% this year Masculine Rare Find out more Caio Caio - 6% this year Masculine Rare Find out more Kay Kay + 10% this year Neutral Rare Find out more Kaye Kaye + 15% this year Masculine Rare Find out more Keye Keye 0 % this year Masculine Rare Find out more Keyes Keyes 0 % this year Masculine Rare Find out more Cais Cais 0 % this year Masculine Rare Find out more Family name origins & meanings English and Irish : variant spelling of Keyes. Famous people with this last name Alicia Keys