Donald Wills Douglas Jr. (July 3, 1917 – October 3, 2004) was an American industrialist and sportsman who competed in the 1932 Summer Olympics, the Transpacific Yacht Race, and in equestrian dressage competitions.

[1] In 1932 he was a crew member of the American boat Gallant, which won the silver medal in the 6 metre class in the summer Olympics, held in Los Angeles, Calif.[2] In 1943, he was appointed manager of flight test in the Douglas Aircraft Company.

In World War II he supervised the flight testing of practically every type of aircraft built by Douglas at the time, including SBD Dauntless and C-54 Skymaster.

[1] In 1952, he and his brother Jim persuaded Ralph Larrabee, the owner of the 161-foot schooner Goodwill, to enter it in the Transpacific Yacht Race from Los Angeles to Honolulu.

They were so long that Jim Douglas created pole ends that could be severed by means of explosive bolts from fighter jet ejector seats to drop the sail in an emergency.