Hugh Dean McLellan (September 10, 1876 – June 20, 1953) was a United States federal judge.
Born in Belfast, Maine, McLellan received an A.B. from Colby College in 1895 and an LL.B. from Columbia Law School in 1902. He was in private practice in Boston, Massachusetts from 1902 to 1932. He was a Lecturer, Boston University Law School from 1929 to 1938. He was a Lecturer, Harvard Law School from 1935 to 1942. He was in private practice in Boston, Massachusetts from 1941 to 1953.
McLellan was a federal judge on the United States District Court for the District of Massachusetts. McLellan was nominated by President Herbert Hoover on January 18, 1932, to a seat vacated by James M. Morton, Jr.. He was confirmed by the United States Senate on February 3, 1932, and received his commission on February 10, 1932. McLellan served in that capacity until September 30, 1941, due to resignation.
He died in Brookline, Massachusetts.