Lawrence Weingarten (December 30, 1897 – February 5, 1975) was an American film producer. He was best known for working for Metro-Goldwyn-Mayer and producing some of the studio's most prestigious films such as Adam's Rib (1949), I'll Cry Tomorrow (1955) and Cat on a Hot Tin Roof (1958).

During his career, Weingarten was nominated for an Academy Award in 1959 and was given the Irving G. Thalberg Memorial Award in 1974, which was presented by Katharine Hepburn in her first and only appearance at the Oscars ceremony to present the award to her long time friend Weingarten. Whenever she won an Oscar, she always had either the presenter or another person associated with her film accept it on her behalf. Upon taking the stage, she received a standing ovation, to which she replied "I'm living proof that a person can wait forty-one years to be unselfish", a reference to her first Oscar win in 1933.

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Weingarten was born in Chicago, Illinois on December 30, 1897. He began his career as a publicity man for Thomas H. Ince and First National Pictures. In 1921, he independently produced a series of Biblical films. He was also involved in the production of Buster Keaton comedies, as well as Marie Dressler and Polly Moran films early in his career.^[1]

Weingarten joined MGM under contract as an associate producer in 1927 and for many years was a co‐head of the MGM editorial board. During his almost forty year long tenure, he produced 75 films, including A Day at the Races (1937), Adam's Rib (1949), Pat and Mike (1952), The Tender Trap (1955), I'll Cry Tomorrow (1955), Don't Go Near the Water (1957) and Cat on a Hot Tin Roof (1958).

In 1962, he served as a president of the Screen Producers Guild. He retired in 1968 and received the Irving G. Thalberg Memorial Award in 1974.

Weingarten was married to Sylvia Thalberg from 1928 to 1939 and Jessie Marmorston from 1945 until his death.

He died on February 5, 1975, aged 77.