Dianna is a spelling of Diana, the Roman goddess of the moon and the hunt, whose name comes from an ancient root meaning "heavenly" or "divine". The double n was common in the mid-20th century, when Diana and Dianna were both everyday names, and Diana, Princess of Wales, kept the classic form in the headlines. Dianna ranked number 847 in 2000, left the top 1000 soon after and stands at number 2566 in 2025.