Sophia Delza Glassgold (1903 – June 27, 1996),[1] born Sophie Hurwitz,[2] was an American modern dancer, choreographer, author, and practitioner of Wu-style tai chi, which she taught at her school in New York City.

Through her books, articles, lectures, and television appearances, Delza promoted the practice of tai chi for health and fitness, and was one of the first popularizers of Chinese martial arts in the United States.

[2] When Anna Sokolow's Dance Unit needed a new space to rehearse in, Delza made her studio on West 16th Street available to them.

She also performed in a "Dances for Spain" concert at the Adelphi Theatre that year, alongside fellow modern dancers Sokolow and Helen Tamiris.

She subsequently began teaching tai chi as a form of exercise at the United Nations and the Actors Studio.

[1] In 1996, Sophia Delza died at the age of 92 at Beth Israel Medical Center in New York City, soon after publishing her last book, The T'ai-Chi Ch'uan Experience.