大陆封锁 (法语：blocus continental，英语：continental system）是拿破仑在1806年11月21日在柏林启动的对英国的经济封锁政策，该政策于1814年结束。拿破仑意图使用经济战的手段使英国屈服。另一方面，该政策也可以起到保护法国经济的作用。

在特拉法加海战后，法国无力再发动渡海战，拿破仑只能将争霸重心放回欧洲大陆。故而他要利用经济手段。为了彻底切断英国在欧洲的贸易，他下令禁止了来自或驶向英伦三岛的通商船运。在法国统治的地区，英国的货物被没收。英国商人受到警察追查。到了1807年底，政策的对象扩展至中立的船运。1810年8月5日的法令要求所有进口货物关税提高50%。

The Continental System or Continental Blockade (known in French as Blocus continental) was the foreign policy of Napoleon I of France in his struggle against Great Britain during the Napoleonic Wars. As a response to the naval blockade of the French coasts enacted by the British government on 16 May 1806, Napoleon issued the Berlin Decree on 21 November 1806, which brought into effect a large-scale embargo against British trade. The embargo was effective intermittently for about half the time. It ended on 11 April 1814 after Napoleon's first abdication. In terms of economic damage to Great Britain, the blockade was largely ineffective. As Napoleon realized that extensive trade was going through Spain and Russia, he invaded those two countries. His forces were tied down in Spain — in which the Spanish War of Independence was occurring simultaneously — and suffered severely in, and ultimately retreated from, Russia in 1812.