Sir George Halsey Perley GCMG PC (September 12, 1857 – January 4, 1938) was an American-born Canadian politician and diplomat.

Born in Lebanon, New Hampshire, the son of William Goodhue Perley and Mabel E. Ticknor Stevens, Perley was educated at the Ottawa Grammar School, at St. Paul's School in Concord, New Hampshire, and at Harvard University where he graduated with a Bachelor of Arts degree in 1878.

Perley & Co which had mills at Pointe-Calumet, Quebec and vice president of the Hull Lumber Company, Ltd., which is operating largely on the upper Ottawa.

Along with the other heirs of his father, he donated his homestead on Wellington Street for the purpose of establishing a hospital and served as vice president of its Board of Management.

Perley served as High Commissioner to the United Kingdom and Minister of the Overseas Military Forces in the World War I government of Sir Robert Borden.