john lee pratt (october 22, 1879 – december 22, 1975) was an american businessman born in king george county, virginia. he received a chemical engineering degree from the university of virginia, entered the ranks of american business executives in two major u.s. corporations, and later purchased and helped preserve historic chatham manor in stafford county, virginia which, upon his death, he gave to the national park service (as well as an adjacent bluff to the local government, which named the resulting park after him).