Xenu is a figure in the Operating Thetan teachings of Scientology. Xenu may also refer to: xenu.net or Operation Clambake, a website critical of Scientology XENU-AM, an AM radio station in Nuevo Laredo, Tamaulipas, Mexico See also Xemnu, a Marvel Comics character Xenu's Link Sleuth, a computer program used to check web site links Xinu, an educational research-oriented operating system XNU, a computer operating system kernel