Mekia Cox (born November 18, 1981) is an American actress and dancer, known for her recurring role as Sasha in the second and third seasons of 90210 and her role as a dancer in the Michael Jackson concert series This Is It and the related film Michael Jackson's This Is It. In 2010, she assumed a supporting role in Lost creator J. J. Abrams's cancelled spy drama, Undercovers. Lastly, she is also known for portraying Princess Tiana on Once Upon A Time.
As a youth, Cox had a history of dance and theater training experience. Much of her early work was associated with Universal Studios and Nickelodeon. She continued to train in the performing arts in high school and college. Subsequently, she toured nationally in stage productions of musicals such as Fame.