Alan Wolf Arkin (born March 26, 1934) is an American actor, director, musician and singer. He is known for starring in such films as Wait Until Dark, The Russians Are Coming, the Russians Are Coming, The Heart is a Lonely Hunter, Catch-22, The In-Laws, Edward Scissorhands, Glengarry Glen Ross, Marley & Me, and Little Miss Sunshine, for which he won an Academy Award for Best Supporting Actor in 2007. He is the father of actors Adam Arkin, Anthony Arkin, and Matthew Arkin.

Arkin was born in Brooklyn, New York City, the son of Beatrice (née Wortis), a teacher, and David I. Arkin, a painter and writer who mostly worked as a teacher. Arkin was raised in a Jewish family with "no emphasis on religion"; his maternal grandfather was an immigrant from Odessa, Ukraine. The family moved from Brooklyn to Los Angeles when Arkin was 11 years old, but an eight-month Hollywood strike cost Arkin's father a set designer job he had wanted to take. During the 1950s Red Scare, Arkin's parents were accused of being Communists, which led to David losing his job when he refused to answer questions about his political affiliation. David challenged the dismissal and was ultimately vindicated, but only after his death.

Arkin has been married three times. He and Jeremy Yaffe, to whom he was married from 1955 to 1960, have two sons: Adam Arkin, born August 19, 1956, and Matthew Arkin, born in 1960. In 1967, Arkin had son Anthony (Tony) Dana Arkin with actress-screenwriter Barbara Dana (born 1940), to whom he was married from June 16, 1964 to the mid-1990s. In 1996, Arkin married a psychotherapist, Suzanne Newlander. As of 2007, they live in New Mexico.