The Civil Code of Lower Canada was a law that was in effect in Lower Canada on 1 August 1866 and remained in effect in Quebec until repealed and replaced by the Civil Code of Quebec on 1 January 1994. The Code replaced a mixture of French law and English law that had arisen in Lower Canada since the creation of the British Province of Quebec by the Royal Proclamation of 1763, as modified by the Quebec Act in 1774.

A contract is an agreement that specifies certain legally enforceable rights and obligations pertaining to two or more parties. A contract typically involves the transfer of goods, services, money, or a promise to transfer any of those at a future date, and the activities and intentions of the parties entering into a contract may be referred to as contracting. In the event of a breach of contract, the injured party may seek judicial remedies such as damages or equitable remedies such as specific performance or rescission. A binding agreement between actors in international law is known as a treaty.