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