G. T. Blankenship (born March 11, 1928) is an American lawyer and Republican politician from Oklahoma. A former member and minority leader of the Oklahoma House of Representatives, he initiated the investigation of corruption on the Oklahoma Supreme Court that resulted in the removal of three justices during the mid 1960s and changing the process by which future justices would be selected. Leaving the House to run for higher office, Blankenship served as the 10th Attorney General of Oklahoma (the first Republican to hold that position). After serving as Attorney General, he entered private law practice in Oklahoma City and served two terms on the University of Oklahoma's Board of Regents.