欧盟共同外交与安全政策（英语：Common Foreign and Security Policy，简称CFSP；法语：Politique étrangère et de sécurité commune，简称PESC；德语：Gemeinsame Außen- und Sicherheitspolitik，简称GASP），是欧盟三大支柱的第二支柱。1993年11月1日在马斯特里赫特条约（也称欧洲联盟条约）生效时由其前身“欧洲政治合作”转变而来。

This article deals with the workings of European Union foreign policy. For the relations between the European Union and third countries, see Foreign relations of the European Union.

The Common Foreign and Security Policy (CFSP) is the organised, agreed foreign policy of the European Union (EU) for mainly security and defence diplomacy and actions. CFSP deals only with a specific part of the EU's external relations, which domains include mainly Trade and Commercial Policy and other areas such as funding to third countries, etc. Decisions require unanimity among member states in the Council of the European Union, but once agreed, certain aspects can be further decided by qualified majority voting. Foreign policy is chaired and represented by the EU's High Representative, currently Federica Mogherini.