Divorce (also known as dissolution of marriage) is the process of terminating a marriage or marital union. Divorce usually entails the canceling 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 or state. It can be said to be a legal dissolution of a marriage by a court or other competent body. It is the legal process of ending a marriage.

In the United States, divorce is governed by state law, so the specific requirements and procedures vary by state. Generally, a divorce is initiated by one spouse filing a petition for divorce with the court. The other spouse must be served with notice of the petition, and he or she has the right to respond with an answer or counter-petition. Depending on the state, the parties may also be required to attend mediation or a settlement conference in order to resolve any issues. After the issues have been resolved, the court will enter a judgment of divorce, which officially terminates the marriage. Divorce can involve a variety of issues, including but not limited to child custody, child support, spousal support, division of property, and allocation of debt. Depending on the state, the court may also consider the parties’ financial resources and the standard of living during marriage when making decisions regarding alimony.

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 distribution of property, child custody, alimony (spousal support), child visitation / access, parenting time, child support, and division of debt. In most countries, monogamy is required by law, so divorce allows each former partner to marry another person.

Divorce is different from annulment, which declares the marriage null and void, with legal separation or de jure separation (a legal process by which a married couple may formalize a de facto separation while remaining legally married) or with de facto separation (a process where the spouses informally stop cohabiting). Reasons for divorce vary, from sexual incompatibility or lack of independence for one or both spouses to a personality clash or infidelity.

The only countries that do not allow divorce are the Philippines and the Vatican City. In the Philippines, divorce for non-Muslim Filipinos is not legal unless the husband or wife is an undocumented immigrant and satisfies certain conditions. The Vatican City is a state ruled by the head of the Catholic Church, a religion that does not allow for divorce. Countries that have relatively recently legalized divorce are Italy (1970), Portugal (1975, although from 1910 to 1940 it was possible both for the civil and religious marriage), Brazil (1977), Spain (1981), Argentina (1987), Paraguay (1991), Colombia (1991; from 1976 was allowed only for non-Catholics), Andorra (1995), Ireland (1996), Chile (2004) and Malta (2011).