John Alden Woodcock Jr. (born 1950) is a United States federal judge.
Born in Bangor, Maine, Woodcock received a B.A. from Bowdoin College in 1972, an M.A. from London School of Economics in 1973, and a J.D. from the University of Maine School of Law in 1976. He was in private practice in Maine from 1976 to 2003. He was an assistant district attorney (part-time) in the District of Maine from 1977 to 1978.
On March 27, 2003, Woodcock was nominated by President George W. Bush to a seat on the United States District Court for the District of Maine vacated by Gene Carter. Woodcock was confirmed by the United States Senate on June 12, 2003, and received his commission on June 16, 2003.