Nyx is the Greek word for "night" and the name of the primordial goddess of the night, a figure so powerful that even Zeus was said to fear her. The name has been picked up by parents who like short, mythological names with an edge, like Onyx and Lux, and the cosmetics brand of the same name made it familiar. Nyx ranked number 7520 in 2015, peaked at number 2244 in 2022 and stands at number 2577 in 2025.