Marin comes from the Latin marinus and means "of the sea"; in French and Croatian it is a boys' name, but in the United States it is mostly given to girls, helped by Marin County north of San Francisco. It fits the current taste for short, nature-tinged names like Maren and Wren. Marin entered the top 1000 in 2004, peaked at number 837 the same year and has slowly eased to number 2043 in 2025.