Susan Abigail Tomalin was born on October 4, 1946 in Jackson Heights, Queens, New York City. She is the first of nine children born to Lenora Marie (née Criscione) and Phillip Leslie Tomalin.

Her father was of English, Irish, and Welsh ancestry, his English ancestors being from Hackney in London and his Welsh ancestors being from Bridgend. On her mother's side, she is of Italian descent, with ancestors from the regions of Tuscany and Sicily. Sarandon grew up in Edison, New Jersey, where she graduated from Edison High School in 1964.

Susan Sarandon's Family Tree