Caila Marsai Martin (born August 14, 2004) is an American actress and producer, best known for her role as Diane Johnson on the ABC sitcom Black-ish (2014–2022). In 2019, Martin had a starring role in the comedy film Little, which she also produced at the age of 14. She holds the Guinness World Record as the youngest Hollywood executive producer for the movie. Time magazine named her on its "Time 100 Next" the year of its release. In 2022, she produced and starred in the sports comedy film, Fantasy Football.