| AIO | Atlantic USA, Iowa [Internationaler Airport Code] |
| NAI | New Atlantic Initiative vgl. Washington, DC, http://www.aei.org |
| SAA | South Atlantic Anomaly |
| HH-EFU 104 | Atlantic-Frost GmbH Hamburg, Hamburg |
| TEAM | The European- Atlantic Movement London, http://www.european-atlantic.org.uk |
| NAO | North Atlantic Oscillation |
| AT | Atlantic Time [engl.] |
| NAC | North Atlantic Council Brüssel, http://www.nato.int/docu/handbook/2001/hb070101.htm |
| ARCO | Atlantic Richfield Company |
| ACY | Atlantic City International USA, New Jersey [Internationaler Airport Code] |
| ACC | Atlantic Crossing Cable [engl.] LWL-Verbindung nach Amerika |
| ACL | Atlantic Continental Line [engl.] Rotterdam, http://www.continentalline.org |
| TAT | Trans-Atlantic Telephone Cable vgl. http://www.iscpc.org/cabledb/atlan_page.htm |
| TABD | Trans-Atlantic Business Dialogue Brüssel/ Washington, DC, http://www.tabd.com |
| ADT | Atlantic Daylight Time [engl.] Atlantische Sommerzeit |
| AIY | Atlantic City Bader Field USA, New Jersey [Internationaler Airport Code] |
| AST | Atlantic Standard Time [engl.] Amerikanische Zeitzone |
| ASA | Astronomical Society of the Atlantic [engl.] |
| NATO | North Atlantic Treaty Organization, Nordatlantikpakt Brüssel, http://www.nato.int |
| TAFTA | Trans-Atlantic Free Trade Area Transatlantische Freihandelszone |
| DD | Atlantic Coast Jet [IATA-Airline-Code/ USA] |
| BARTS | Bell Atlantic Regional Timesharing [engl.] Firmenbezeichnung |
| APSN | Atlantic Packet Satellite Network [engl.] |
| A&P | The Great Atlantic & Pacific Tea Company [engl.] Montvale, [NJ], http://www.aptea.com |
| HB-EFS 087 | "Ocean Food GmbH & Co. KG Fabrikschiff FMS ""Atlantic Peace"" " Bremerhaven, Bremen |
| EV | Atlantic Southeast Airlines [IATA-Airline-Code/ USA] |
| DH | Atlantic Coast Airlines [IATA-Airline-Code/ USA] |
| RC | Atlantic Airways [IATA-Airline-Code / Färöer Inseln] |
| VS | Virgin Atlantic [IATA-Airline-Code / Vereinigtes Königreich] |