Harlyn is a modern American name that blends the Harl- of Harley and Harlow with the -lyn ending of Evelyn and Brooklyn; if traced to Harley, it carries the Old English sense "hare meadow". It is one of several Har- names, with Harper and Harlow, that became fashionable for girls in the 2010s. Harlyn peaked at number 1128 in 2017 and has settled at number 2142 in 2025.