Theodore Leonard Irving (March 24, 1898 – March 8, 1962) was a U.S. Representative from Missouri.

Leonard Irving
Postcard photo from 1954 campaign for the US House
Member of the U.S. House of Representatives from Missouri's 4th district
In office January 3, 1949 – January 3, 1953
Preceded by	C. Jasper Bell
Succeeded by	Jeffrey Paul Hillelson
Personal details
Born	Theodore Leonard Irving (1898-03-24)March 24, 1898 St. Paul, Minnesota, U.S.
Died	March 8, 1962(1962-03-08) (aged 63) Washington, D.C., U.S.
Resting place	Mount Moriah Cemetery, Kansas City, Missouri, U.S.
Political party	Democratic

Born in St. Paul, Ramsey County, Minnesota, Irving moved with his parents to a farm in North Dakota, where he attended the public schools. He worked for a railroad as a boy and during the First World War; later, he left the railroad to become manager of a theater in Montana. Irving then moved to California and was manager of a hotel. He moved to Jackson County, Missouri, in 1934 and was employed as a construction worker and later became a representative of the American Federation of Labor.

Irving was elected as a Democrat to the Eighty-first and Eighty-second Congresses (January 3, 1949 – January 3, 1953). He was unsuccessful for reelection in 1952 and in a bid for the Democratic nomination in 1954. He once again became a labor organizer, and later was president of a labor union in Kansas City, Missouri.

He died on March 8, 1962, in Washington, D.C., while on a business trip, and was interred in Mount Moriah Cemetery in Kansas City.