David Douglas High School is a public high school in Portland, Oregon, United States. It is a part of the David Douglas School District. DDHS is the largest high school in the state of Oregon.

David Douglas was a Scottish botanist, best known as the namesake of the Douglas fir. He worked as a gardener, and explored the Scottish Highlands, North America, and Hawaii, where he died. The standard author abbreviation Douglas is used to indicate this person as the author when citing a botanical name.