George Winkler (1869 – 1962) was an American architect who practiced in Pennsylvania, Florida and Oklahoma from 1903 to 1953.

Winkler was born in Donegal, Pennsylvania, in 1869 and was educated at Curry College in Pittsburgh, Pennsylvania, Cornell University and Columbia University. He was a member of the following partnerships: Robinson & Winkler, Pittsburgh and Altoona, Pennsylvania (1903-1907); Winkler & McDonald, Tulsa, Oklahoma (1910-1916); Schumacher & Winkler, Tampa, Florida (1926-1930); and Winkler & Reid, Oklahoma City, Oklahoma (1930-1950).^[1] A number of his works are listed on the U.S. National Register of Historic Places.^[2]

Winkler's works include (with attribution):

• Clinton-Hardy House, aka Lee Clinton Residence, 1322 S. Guthrie, Tulsa, Oklahoma (Winkler, George), NRHP-listed^[2]
• Gold Star Memorial Library (1946), Oklahoma City University, Oklahoma City, Oklahoma (Winkler & Reid)
• Holy Family Cathedral (1914), corner 8th and Boulder, Tulsa, Oklahoma (Winkler & MacDonald, and J. P. Curtin, Associated Architects)
• Mayo Building, 420 S. Main Street, Tulsa, Oklahoma (McDonald, Charles A. & G. Winkler; Koberling, Joseph and Brandborg, Lennart), NRHP-listed^[2]
• Mayo Hotel (1924), 115 W. 5th Street, Tulsa, Oklahoma (Winkler, George), NRHP-listed^[2]
• Oklahoma City Public Library (1950), Oklahoma City, Oklahoma (Winkler & Reid)
• Trinity Episcopal Church, Tulsa, Oklahoma^[3]