治外法权是免除本地法律司法权的情形，通常是外交谈判的结果。例如，若一个甲国公民当在乙国访问时享受治外法权，那么这个人在涉嫌犯罪时，乙国的法院不能进行审判。

治外法权通常是互相给与的，主要包括：

• 外交豁免权
• 国家元首的官式访问
• 停靠在本国港口的外国的公共船只
• 停在本国机场的外国飞机

Extraterritoriality is the state of being exempted from the jurisdiction of local law, usually as the result of diplomatic negotiations. Historically, this applied to individuals. Extraterritoriality can also be applied to physical places, such as foreign embassies, military bases of foreign countries, or offices of the United Nations. The three most common cases recognized today internationally relate to the persons and belongings of foreign heads of state, the persons and belongings of ambassadors and other diplomats, and ships in foreign waters.