Ryleigh is a modern American spelling of Riley, which comes from the Irish surname Ó Raghailligh or from an English place name meaning "rye clearing". The -leigh ending became a popular feminine twist on unisex names in the 2000s, alongside Kayleigh and Everleigh. Ryleigh rose from number 834 in 2000 to a peak of number 138 in 2019 and ranks number 344 in 2025.