Jocelynn is a double-n spelling of Jocelyn, a name the Normans brought to England as a masculine name from the Germanic tribal name of the Gauts, later reinterpreted through the Latin jocus as "joyful" or "playful". It turned into a girls' name in the 20th century, and the -lynn spelling took off in the 2000s. Jocelynn entered the top 1000 in 2007, peaked at number 720 in 2010 and has since fallen to number 2178 in 2025.