Isabel Johnston (1898–1981) was an American screenwriter active during Hollywood's silent era.
Johnston was born in Pittsburgh, Pennsylvania, the daughter of Isabel McElheny and John Parry Johnson.
Her work is often confused with that of her mother's, as her mother—a journalist—also wrote a few scenarios and was credited under her married name, Isabel M. Johnston.
Her older sister, Agnes Christine, was a screenwriter in Hollywood.
[1] She'd later follow in her mother's footsteps and become a journalist, working for papers in New York and Los Angeles, in addition to Liberty Magazine.