Donald Wills Douglas was an American aircraft industrialist and engineer.
An aviation pioneer, he designed and built the Douglas Cloudster. Though it failed in its intended purpose—being the first to fly non-stop across the United States—it became the first airplane with a payload greater than its own weight.
He founded the Douglas Aircraft Company in 1921. Under his leadership, the company became one of the leaders of the commercial aircraft industry, engaging in a decades-long struggle for supremacy with arch-rival William Boeing and the company he founded, Boeing.