Joanie Cunningham is a beloved character from the classic television sitcom Happy Days, which aired from 1974 to 1984. Portrayed by actress Erin Moran, Joanie is known for her sweet personality and her journey from a young girl to a teenager navigating the ups and downs of adolescence in the 1950s and 60s. As the younger sister of Richie Cunningham, Joanie often finds herself in humorous situations alongside her family and friends. Her character represents the innocence and charm of youth, making her a memorable part of the show's ensemble cast and a favorite among fans of retro television.