Thomas Charles McGrath Jr. (April 22, 1927, Philadelphia, Pennsylvania – January 15, 1994, Delray Beach, Florida) was an American Democratic Party politician who represented New Jersey's 2nd congressional district in the United States House of Representatives from 1965 to 1967.

He was born on April 22, 1927, in Philadelphia, Pennsylvania, and he graduated from Saint Joseph's Preparatory School in Philadelphia in 1944 and attended the University of Notre Dame from 1944 to 1945.

He served in the United States Navy as an enlisted man, June 1945 to November 1945 and graduated from the United States Naval Academy, Annapolis, Maryland, in 1950, and then served in the Atlantic and Pacific Fleets from 1950 to 1954.

In his first bid, for elective office, McGrath was elected as a Democrat to the Eighty-ninth Congress, defeating four-term Republican Party incumbent Milton W.

After leaving Congress, McGrath was general counsel at the Department of Housing and Urban Development from 1967 to 1969; Treasurer of the New Jersey Democratic State Committee from 1969 to 1973 and a consultant in the construction and finance industry from 1969 to 1992.