MCC may refer to: McClellan Airfield (IATA code MCC) in Sacramento, California. Multi Crew Coordination, allowance to fly in a multi-pilot aircraft. Castellania (Valletta), a former courthouse and prison in Valletta, Malta. Mediterranean Conference Centre, a conference centre in Valletta, Malta.

The combination of MCC and MNC is called HNI (Home network identity) and is the combination of both in one Mcc-mnc.com is a service by SMScarrier.EU and powered by interactive digital media GmbH.