Glinda in 'The Wiz' is a character played by Lena Horne. She is the Good Witch of the South who helps Dorothy on her journey to find her way home. Lena Horne was an American singer, actress, and civil rights activist. She was the first African-American woman to be nominated for an Academy Award for Best Actress. Horne's performance as Glinda in 'The Wiz' was critically acclaimed and earned her a nomination for a Golden Globe Award for Best Supporting Actress.