Runa is a Scandinavian name from the Old Norse rún, which means "secret" or "rune", the letters of the old Germanic alphabets that were also used for divination; it is a feminine counterpart of Rune. In Japan Runa is an unrelated modern name, often written with the character for the moon, and it is also used in Bengal. Runa is rare in the United States, peaking at number 2494 in 2020 and ranking number 2771 in 2025.