Nellie Bellflower (born May 1, 1946 in Phoenix, Arizona) is an American actress and voice artist. She is best remembered for providing the voice of Princess Ariel in the Ruby-Spears animated television series Thundarr the Barbarian. She has also been in The Last Unicorn (voice), Americathon, the miniseries East of Eden, and guest roles on various TV shows such as Barnaby Jones, Barney Miller, Starsky and Hutch, and Happy Days.

Did voice work for three Rankin-Bass animated fantasy features - Eowyn in Return of the King, The (1980) (TV), the Tree in Last Unicorn, The (1982) and Danielle in Flight of Dragons, The (1982).