Whitney North Seymour, Jr. (born July 7, 1923) was a New York State Senator in the 1960s and United States Attorney for the Southern District of New York from 1970 to 1973.
The son of Whitney North Seymour, the younger Seymour served in the United States Military during World War II. Seymour received his bachelors degree from Princeton University in 1947 and his JD from Yale Law School in 1950.
Seymour was a member of the New York State Senate from 1966 to 1968.
During his term as United States Attorney, Seymour represented the United States Government in seeking to stop the New York Times from publishing the Pentagon Papers.
In 2008, Seymour, his wife Catryna, and their daughters Tryntje and Gabriel wrote a play about Hans Scholl, his sister Sophie Scholl, and their role in the White Rose.