Morton DaCosta (March 7, 1914 – January 26, 1989) was an American theatre and film director, film producer, writer, and actor.
Born Morton Tecosky in Philadelphia, Pennsylvania, DaCosta began his career as an actor in the Broadway production of Thornton Wilder's The Skin of Our Teeth starring Tallulah Bankhead in 1942 . A decade later he made his stage directing debut with The Grey-Eyed People.
The Broadway production of The Music Man earned DaCosta a Tony Award nomination for Best Director of a Musical. For the film version, he received Best Director nominations from the Directors Guild of America Awards and the Golden Globe Awards. As the producer of the film version, he also received an Oscar nomination for Best Picture.
His feature film directorial debut, the film version of Auntie Mame, was nominated for six Academy Awards including Best Picture. Both with Auntie Mame and four years later with The Music Man, DaCosta was not nominated for Best Director despite both films receiving Best Picture nominations.
DaCosta, who was always known by his nickname Tec, died of heart failure in Redding, Connecticut.