Don Taylor Udall (July 20, 1897 – March 14, 1976) was a member of the Arizona State Legislature from the Udall political family.

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Born and raised in Arizona, he was the son of David King Udall and Ida Frances (Hunt) Udall.

He graduated from Georgetown University with a law degree, and was admitted to the Arizona Bar in 1923. From 1941–1942 he was a member of the Arizona State Legislature. During World War II, he served as a Lieutenant Colonel in the U.S. Army Judge Advocate Generals Corps, with duty in the South Pacific. Later he was elected as a Judge of the Arizona Superior Court.

He died in Mesa, Arizona, in 1976. He is buried in the Holbrook Cemetery in Holbrook, Arizona.

• Arizona Pioneer Mormon: David King Udall, His Story and His Family
• Mo Udall Speech: "Mormon Settlement in Arizona," Heard Museum, Phoenix, Arizona, February 18, 1971