离婚（英文：divorce），是互为配偶的双方生存期间，通过法律手段解除婚姻关系的方式。

通常办理离婚进程的过程中，都要面对许多复杂的问题，尤其是子女的抚养权或监护权，以及夫妇间甚至是双方家庭在财产上的分配；而且相当多的夫妻离婚之前会先协议分居。离婚协议书里的内容，该是平等协商后的两全其美的公平结果。离婚亦有与死去的配偶离婚的先例，但现代社会已没有这种需要，不过丧偶的情况下也能算是离婚。在信奉天主教为多数的国家，离婚曾是禁止的，但现已自由宽松。如今，目前世界上仅有梵蒂冈和菲律宾这两个国家不允许离婚。在菲律宾，解除婚姻关系的方式，是宣布婚姻为「无效婚姻」。

Divorce (or dissolution of marriage) is the termination of a marriage or marital union, the canceling and/or reorganizing of the legal duties and responsibilities of marriage, thus dissolving the bonds of matrimony between a married couple under the rule of law of the particular country and/or state. Divorce laws vary considerably around the world, but in most countries divorce requires the sanction of a court or other authority in a legal process, which may involve issues of alimony (spousal support), child custody, child visitation / access, parenting time, child support, distribution of property, and division of debt. In most countries, monogamy is required by law, so divorce allows each former partner to marry another person; where polygyny is legal but polyandry is not, divorce allows the woman to marry a new husband.