Donald Holman McLean (March 18, 1884, Paterson, New Jersey – August 19, 1975, Burlington, Vermont) was an American Republican Party politician who represented New Jersey's 6th congressional district in the United States House of Representatives from 1933 to 1945.

Born in Paterson, New Jersey on March 18, 1884, McLean attended the city's public schools.

McLean was elected as a Republican to the Seventy-third and to the five succeeding Congresses, serving in office from March 4, 1933 – January 3, 1945.

After leaving Congress, he served as prosecutor of the pleas of Union County from June 24, 1945, to April 18, 1946, when he was appointed judge of the New Jersey Court of Errors and Appeals, the state's highest court under the 1844 Constitution of New Jersey.

His remains were cremated, and his ashes interred in Vail Memorial Cemetery, Parsippany, New Jersey.