The Eden Treaty was a treaty signed between Great Britain and France in 1786, named after the British negotiator William Eden, 1st Baron Auckland (1744–1814). The French side was represented by Joseph Matthias Gérard de Rayneval. It effectively ended, for a brief time, the economic war between France and Great Britain and set up a system to reduce tariffs on goods from either country. It was spurred on in Britain by the secession of the thirteen American colonies, and the publication of Adam Smith's Wealth of Nations. British Prime Minister William Pitt the Younger was heavily influenced by the ideas of Smith, and was one of the key motivators of the treaty.
Obstinancy in negotiations on the part of the British made the commercial agreement almost wholly beneficial to the British, and the unequal protection on certain industries ended up hurting the French economy. This treaty is often considered to be one of the grievances of the French people that sparked the French Revolution. The treaty collapsed in 1793, following claims in the National Convention that the Aliens Act 1793 breached the terms of the treaty and the outbreak of war in early February between Great Britain and France ended any chance of a compromise.