Theodore Isaac Rubin (born April 11, 1923) is an American psychiatrist and author.

He is a long-time contributing columnist to the Ladies Home Journal, and the author of more than twenty-five works of fiction and nonfiction. In 1962, director Frank Perry made the acclaimed film David and Lisa from Rubin's fact-based story of the same name. The film was remade by entertainer Oprah Winfrey in 1998.

Rubin is a past president of the American Institute for Psychoanalysis .

He lives in New York City.