George Hubbard Blakeslee (August 27, 1871 – May 5, 1954) was an academic, professor of history and international relations at Clark University, and a founder (along with G. Stanley Hall) of the Journal of Race Development, the first American journal devoted to international relations. This journal was later renamed the , which in turn was merged with Foreign Affairs. He died at Worcester, Massachusetts in 1954. He was buried in the Rural Cemetery.