Grim, derived from Old Norse 'Grímr', is of Old Norse origin and has been traditionally associated with Norse mythology. The name is thought to mean 'mask' or 'helmet', likely referring to the wearing of a mask or helmet in battle or for disguise. It was borne by several characters in Norse literature, most notably Grimnir, an incarnation of Odin, the All-Father god in Norse mythology. In Scandinavian folklore, Grim is also the name given to the 'Yule Goat', a legendary creature who visits children at Christmas time, bearing gifts or punishments depending on their behavior throughout the year.
The name Grim experienced a resurgence in popularity between 2020 and 2023, with six births each year during this period, after a dip to five births in 2017 and again in 2022. Overall, there were twenty-two babies named Grim over the years 2017 to 2023 inclusive.