Brynnleigh is a modern American name that extends Brynn, from the Welsh word bryn, "hill", with the ornamental -leigh ending that also appears in Everleigh and Kinsleigh. It is one of several spellings of Brynlee that appeared when the -lee and -leigh fashion took hold in the 2010s. Brynnleigh ranked number 4160 in 2015, peaked at number 1945 in 2022 and stands at number 2549 in 2025.