Mark C. "Marty" Rathbun (born 1957) is a former senior executive of the Church of Scientology who last held the post of Inspector General of the Religious Technology Center (RTC), the organization that is responsible for the protection and enforcement of all Dianetics and Scientology copyrights and trademarks. Rathbun left the Church of Scientology in 2004 and became an independent Scientologist, but now considers himself non-religious.