Jaylynn is a modern American combination of the popular syllable Jay with the ending -lynn, following the model of names like Kaylynn and Raelynn; it has no traditional meaning, though the Lynn element is usually traced to the Welsh llyn, "lake". It was at its most popular at the end of the 2000s. Jaylynn entered the top 1000 in 2001, peaked at number 484 in 2009 and has slipped to number 2054 in 2025.