Donald Snow Knowlton (November 22, 1892 – July 27, 1976) was an American public relations executive.
He graduated from Lincoln-West High School and Western Reserve University.
Union Trust closed during the Great Depression, so Knowlton joined Hill in the new venture.
His mother, Fanny Snow Knowlton, was a composer.
This article about an American businessperson born in the 1890s is a stub.