| EC | European Community Europäische Gemeinschaft |
| JCP | Java Community Process |
| EPC | European Political Community |
| EEC | European Economic Community |
| SCSL | Sun Community Source Licensing |
| CLN | Community Learning Network |
| CDO | Community Dial Office |
| CARICOM | Caribean Community [engl.] Wirtschaftsgemeinschaft der karibischen Inselstaaten |
| CAN | Community Alert Network |
| CDL | Community Development Library [engl.] |
| EURATOM | EURopean ATOMic energy community |
| FCLC | Fibre Channel Loop Community |
| AEC | African Economic Community [engl.] http://www.panafricanperspective.com/aec.htm |
| MCCOI | Multimedia Communications Community of Interest |
| OFTC | Open and Free Technology Community |
| SADC | South African Development Community Entwicklungsgemeinschaft des südlichen Afrikas |
| ECIP | European Community Investment Partners |
| ECHO | European Community Host Organisation Amt für humanitäre Hilfe der Europäischen Gemeinschaft, ec.europa.eu/comm/dgs/humanitarian_aid/index_de.htm |
| CDJ | Community Development Journal [engl.] Online-Zeitung, Oxford, Grossbritanien |
| CER | Community of European Railways [engl.] Gemeinschaft der Europäischen Bahnen |
| CAX | Community Automatic Exchange [engl.] Kommunale Telefonanlage |
| Community Ecol. | Community Ecology [hat ein eigenes Review] Zeitschrift |
| CATV | Community Antenna Television [engl.] Fernsehen mittels Gemeinschaftsantenne |
| ECDI | Economic and Community Development Institute |
| ECDO | Electronic Community Dial Office |
| ACCT | Association of Community College Trustees [engl.] Washington, DC, http://www.acct.org |
| COSAC | Conference of Community and European Affairs Committees of Parliaments of the European Union Konferenz der Europaausschüsse der nationalen Parlamente |