Annistyn is a modern American spelling of Aniston, the English surname made famous by the actress Jennifer Aniston; the surname is of uncertain origin and is often linked to the place name Anston, so the first name is understood as a "surname name" built on Ann. The y spelling follows the pattern of Emersyn and Kinslyn. In the United States Annistyn ranked number 1645 in 2015, peaked at number 1474 in 2019 and stood at number 2611 in 2025 with 66 girls.