Mark McCullough (born August 7, 1967) is an American businessman, attorney, and Republican politician from Oklahoma. McCullough represents the 30th district in the Oklahoma House of Representatives. House District 30 encompasses Sapulpa, Mounds, Kiefer, Glenpool, Bixby, and outlying areas. McCullough has been appointed chairman of the Appropriations and Budget Judiciary for the First Regular Session of the 54th Oklahoma Legislature.