A '''multiple system operator''' is a [[Cable TV]] operator of multiple [[cable television]] systems. A cable system in the US, by [[FCC]] definition, is a facility serving a single community or a distinct governmental entity, each with its own [[Cable franchise|franchise agreement]] with the cable company. Though in the strictest sense any cable company that serves multiple communities is thus an MSO, the term today is usually reserved for companies that own a very large number of cable systems, such as [[Comcast]] in the US or [[NTL]] in the UK.