Marriage—also known as matrimony or wedlock—is the legal and cultural process by which two people join their separate lives as one. The contractual rights and obligations of the parties to a marriage are generally defined by the state, as provided in the state’s statutes (often in the family code), unless otherwise agreed by the parties in a prenuptial or postnuptial agreement. Marriage is intended to last until death, but is often terminated sooner by separation or divorce.

In Louisiana, marriage is recognized as a legal union between two people, which is intended to merge their lives into a single social and economic entity. The state's statutes, particularly within the Louisiana Civil Code, outline the legal rights and responsibilities of married individuals. These include provisions related to property ownership, spousal support, and inheritance rights, among others. Louisiana is unique in that it follows a form of civil law, influenced by the French Napoleonic Code, which differs from the common law tradition used in other U.S. states. Couples in Louisiana can also enter into prenuptial or postnuptial agreements to alter or specify the terms of their marriage contract, particularly regarding property division. Should a marriage end, the state provides legal processes for separation and divorce, which address issues such as asset division, alimony, and child custody. It's important for individuals considering marriage or facing marital issues in Louisiana to consult with an attorney to understand the specific legal implications and requirements under state law.