Marjorie Muir Worthington (1900 – February 17, 1976) was an American writer of novels and short stories.
In 1926, Worthington traveled to Paris where she joined ranks with other expatriate American artists and writers who were living there.
These stories appeared in magazines such as Vogue, McCall's, Vanity Fair, Harper's, and Cosmopolitan.
While in New York studying journalism, she met and married her first husband, Carlton Beecher Stetson.
Her third marriage with William Buehler Seabrook lasted from 1935 to 1941, before it ended due to his alcoholism and sadism.