James Joseph Reynolds Jr. (January 8, 1907 – October 9, 1986) was the Under Secretary of Labor during the Lyndon B. Johnson Administration in the United States. Earlier he served as Assistant Secretary for Labor-Management Relations from 1961 to 1965, initially for President John F. Kennedy. Reynolds was an industrialist, and had been a member of the National Labor Relations Board under President Harry S. Truman. Reynolds died at Georgetown University Hospital in 1986.