Katharine ("Kay") Gratten Aldridge (July 9, 1917 – January 12, 1995) was an American actress and model, best known for playing feisty and imperiled heroines in black-and-white serials during the 1940s.

[2] Following her father's death when she was two years old, her mother moved the family to Lyells, Virginia, where she and her four siblings were raised with the help of her great aunts, who were schoolteachers.

In 1937, Aldridge was chosen as one of the 10 most photographed girls in the world, and was selected to go to Hollywood to appear in the United Artists film Vogues of 1938.

[2] In 1939, she signed a contract with 20th Century Fox, and in the next few years, landed a number of minor and largely decorative roles, credited as Katherine Aldridge.

Now credited as Kay Aldridge, she played the character Nyoka Gordon, who confronts a host of villains while seeking her father, who was lost on an expedition in Africa.