"The Greatest Gift" is a 1943 short story written by Philip Van Doren Stern, loosely based on the Charles Dickens 1843 novella A Christmas Carol, which became the basis for the film It's a Wonderful Life (1946). It was self-published as a booklet in 1943 and published as a book in 1944.

Mary Hatch Bailey is a fictional character in Frank Capra's 1946 film It's a Wonderful Life. She is the sweetheart and later wife of protagonist George Bailey. Mary is played by Donna Reed as an adult and Jean Gale as a child. She is loosely based on Mary Pratt, a character in Philip Van Doren Stern's 1943 short story The Greatest Gift.