Douglas Houghton Campbell (December 19, 1859 – February 24, 1953) was an American botanist and university professor.

[3] Douglas Campbell graduated from Detroit High School in 1878, going on to study at the University of Michigan.

[1] He received his master's degree in 1882, and taught botany at Detroit High School while he completed his PhD research.

[4] When Campbell returned to the United States he took up a professorship at Indiana University (1888 to 1891), writing the textbook Elements of Structural and Systematic Botany.

This book, together with its subsequent editions in 1905 and 1918, became the authoritative work on the subject and "firmly established Campbell's reputation as one of the leading botanists of the United States.