Eugene du Pont Jr. (1873-1954) was a director of the E.I. du Pont de Nemours & Company from 1917 until 1954, and a great grandson of company founder, Éleuthère Irénée du Pont (1771-1834). Eugene du Pont Jr. was born July 7, 1873 in Wilmington, Delaware. He was the son of Eugene E. du Pont (1840-1902) and Amelia Elizabeth du Pont (1842-1917). Eugene E. du Pont was the president of the DuPont Company from 1889 until his death in 1902.

Eugene du Pont Jr. attended St. Paul’s School in Concord, New Hampshire, from 1888 until 1892, and later Brown and Nichols School in Cambridge, Massachusetts from 1892 to 1893. In 1897, he received a degree from Harvard University. Not long after graduation, du Pont joined the DuPont Company as assistant to the president in the administrative office. After the death of his father and company president in 1902, he was named assistant director of sales for the E.I. du Pont de Nemours Powder Company in January 1903, a subsidiary of the DuPont Company. As assistant director of sales, du Pont traveled extensively for fifteen years to increase the sales of explosives in the central west. In February 1913, he took a leave of absence from the company and resigned five months later. He was elected a director of E.I. du Pont de Nemours & Company on March 12, 1917, a position in which he remained until his death.

He was also a director of the Equitable Security Trust Company in Wilmington, and held memberships in various societies and clubs, including the Sons of the American Revolution, Wilmington Club, DuPont Country Club, Aurora Gun Club, Woodmont Rod and Gun Club, and several others. In January 1913, he married Ethel Pyle (1881-1954) of Wilmington and had four children, one of whom, Ethel du Pont Roosevelt-Warren (1916–1965), married Franklin Delano Roosevelt Jr. (1914–1988) in 1937. Eugene E. du Pont Jr. died December 15, 1954.