Tessa Kay Kosta (December 12, 1890[1] – August 23, 1981) was an American actress who starred in Broadway musicals and operettas during the early decades of the twentieth century.

Prior to entering college at Salt Lake City, she studied music at the Holy Rosary Academy in San Bernardino, California.

[4][6] She stayed with Madame Sherry for over a year to positive reviews before touring in late 1912 as Claudine with the musical comedy The Pink Lady opposite Olga De Baugh and Harry Depp.

[12] Kosta’s Broadway career would span at least fifteen years,[13] with Chu Chin Chow (1917/18),[14] Lassie (1920),[15] The Chocolate Soldier (1921/22),[16] Caroline (1923)[17] and Song of the Flame (1926)[18] among her more memorable productions.

She last appeared on Broadway in 1929 at Jolson's 59th Street Theatre playing the multiple roles Musette, Irma and Lieutenant Fedor in The Fortune Teller.