Landen is a variant of Landon, an English surname and place name from the Old English lang and dun, meaning "long hill". The spelling with -en took off in the United States in the 2000s alongside Jayden and Brayden. Landen ranked number 714 in 2000, peaked at number 199 in 2008 and has slipped every year since, falling to number 1045 in 2025.