Yoselin is a Spanish-language spelling of Jocelyn, a Germanic name brought to England by the Normans and derived from the tribal name of the Gauts, so it means "member of the Gauts", though it is popularly read as "joyful". The Y spelling reflects how the name sounds in Spanish and is used mostly in Mexican and Central American families. In the United States Yoselin entered the top 1000 in 2001, peaked at number 476 in 2007 and has since fallen to number 2016 in 2025.