| EA | Europe Agreement(欧州協定) |
| EAGGF | European Agricultural Guidance and Guarantee Fund(欧州農業指導保証基金)(→FEOGA) |
| EAPC | Euro-Atlantic Partnership Council(欧州大西洋パートナーシップ理事会) |
| EC | European Community(欧州共同体) |
| ECA | Economic Cooperation Administration(経済協力局[マーシャル・プランにおけるアメリカ側の監督機関]) |
| ECB | European Central Bank(欧州中央銀行) |
| ECJ | European Court of Justice(欧州司法裁判所) |
| ECOFIN | Economic and Financial Affairs Council(財務相理事会) |
| ECR | European Court Report(欧州裁判所判例集) |
| ECSC | European Coal and Steel Community(欧州石炭鉄鋼共同体) |
| ECU | European Currency Unit(欧州通貨単位:エキュー) |
| EDA | European Defense Agency(欧州防衛機関) |
| EDC | European Defense Community(欧州防衛共同体) |
| EDF | European Development Fund(欧州開発基金) |
| EEA | European Economic Area(欧州経済領域) |
| EEC | European Economic Community(欧州経済共同体) |
| EFTA | European Free Trade Association(欧州自由貿易連合) |
| EIB | European Investment Bank(欧州投資銀行) |
| ELDO | European Launcher Development Organization(欧州ロケット開発機関) |
| EMI | European Monetary Institute(欧州通貨機構) |
| EMS | European Monetary System(欧州通貨制度) |
| EMU | Economic and Monetary Union(経済通貨同盟) |
| ENEA | European Nuclear Energy Agency(欧州原子力機関) |
| ENP | European Neighbourhood Policy(欧州近隣諸国政策) |
| EP | European Parliament(欧州議会) |
| EPA | European Political Authority(欧州政治機構) |
| EPC | European Political Community(欧州政治共同体) European Political Cooperation(欧州政治協力) |
| EPU | European Payments Union(欧州決済同盟) European Parliamentary Union(ヨーロッパ議会同盟) |
| ERDF | European Regional Development Fund(欧州地域開発基金) |
| ERM | Exchange Rate Mechanism(為替相場メカニズム) |
| ERT | European Round Table of Industrialists(欧州産業人円卓会議) |
| ESA | European Space Agency(欧州宇宙機関) |
| ESCB | European System of Central Banks(欧州中央銀行制度) |
| ESDI | European Security and Defense Identity(欧州安全保障防衛アイデンティティ) |
| ESDP | European Security and Defence Policy(欧州安全保障防衛政策) |
| ESF | European Social Fund(欧州社会基金) |
| ESPRIT | European Strategic Programme for Research and Development in Information Technology(欧州情報技術研究開発戦略) |
| ESRO | European Space Research Organization(欧州宇宙研究機関) |
| ETA | Euskadi Ta Askatasuna(バスク祖国と自由) |
| EU | European Union(欧州連合) |
| EUA | European Unit of Account(欧州計算単位) |
| EUI | European University Institute(欧州大学院大学) |
| EUMC | EU Military Committee(EU軍事委員会) |
| EURATOM | European Atomic Energy Community(欧州原子力共同体) |