George Brinton McClellan Harvey (February 16, 1864 - August 20, 1928) was an American diplomat, journalist, author, street railway magnate, and editor of several magazines.

Harvey was a conservative who wanted Washington to protect big business from what he saw as unjust privilege by labor unions.

[2] Harvey then became associated with Thomas Fortune Ryan and William C. Whitney, leading Democrats who were millionaire promoters of street railways.

Their breakup was the talk of the hour in the national press, and helped Wilson gain support among liberal Democrats.

[2] Despite retiring from Harper's Weekly as editor in 1913, Harvey returned in 1918 to use it as a medium for attacking the policies of President Wilson.

[2] Harvey was a central figure in the "smoke-filled room" that played a major role in the GOP national convention in Chicago in 1920.

The politicians there recognized that the three leading contenders were stalemated and that a dark horse like Warren G. Harding was needed as the Republican nominee.

[2] Harvey published a number of works during his life, most notably Women in 1908 and Henry Clay Frick, the Man (1928), a biography of the industrialist, art collector, and philanthropist.