John W. Galbreath, American businessman and philanthropist, founded Darby Dan Farm (d. 1988)
John Wilmer Galbreath (August 10, 1897 – July 20, 1988) was an American building contractor and sportsman.

Born in Derby, Ohio, he grew up in Mount Sterling, Ohio, where he graduated from high school. He then graduated from Ohio University in 1922 and was a member of the Beta chapter of Delta Tau Delta International Fraternity. The non-denominational Galbreath Memorial Chapel on the Ohio University College Green was donated by Galbreath in memory of his first wife, Helen Mauck, who died in 1946.

In 1955, he married Dorothy Bryan Firestone, widow of Russell Allen Firestone of the Firestone Tire and Rubber Company.