Rhiannen is a beautiful and unique name for a baby girl. It has English origins and is pronounced as ree-AN-en (/riˈæn.ən/). Rhiannen is an alternative spelling of the more commonly known name Rhiannon. This name has a rich history and is associated with Welsh mythology, where Rhiannon was a goddess associated with enchantment and horses. In recent years, the popularity of Rhiannen in the United States has been fairly low, with only 11 occurrences between 1995 and 1999. However, this rarity adds to its appeal for parents looking for a distinctive name for their daughter.