William Frederick Bigelow (August 14, 1879 - March 6, 1966) was an American magazine editor active in the first half of the 20th century. Bigelow was born near Milford Center, Ohio. He graduated from Ohio Wesleyan University in 1905, and became a trustee of the same in 1929. After graduating, Bigelow began his long editorial career as a copy boy at Cosmopolitan, of which he became managing editor in 1909. In 1913, at the invitation of magazine owner William Randolph Hearst, he became the editor of Good Housekeeping, a position he maintained until 1940. His key innovation there was to introduce the Good Housekeeping Institute, a test lab where the magazine evaluated and recommended products to its readers.