Joanie is a pet form of Joan, the medieval English feminine of John, which goes back to the Hebrew Yochanan and means "God is gracious". It has the easygoing, mid-century feel of names like Bonnie and Annie, and American audiences know it from Joanie Cunningham on the sitcom Happy Days. Joanie is a rare name in the United States: it climbed from number 5559 in 2015 to number 2731 in 2025, its best rank so far, with 63 girls given the name.