Rylynn is a modern American blend of Rylee or Riley, the Irish surname usually glossed as "courageous", with the ending -lynn that appears in Raelynn and Kaylynn. Like most of these blends it has no history before the 1990s and is chosen for its sound. Rylynn peaked at number 1154 in 2019, just short of the top 1000, and has drifted back to number 1523 in 2025.