Adley is a modern American name of uncertain origin, usually explained either as a form of the Hebrew Adlai, "God is just", or as a blend of Addie with the -ley ending of Hadley and Paisley. It emerged in the 2010s as parents looked for fresh takes on Addison and Adeline. Adley entered the US top 1000 in 2015, peaked at number 509 in 2021 and ranks number 805 in 2025.