Unregistered cohabitation is a legal status (sometimes de facto) given to same-sex or opposite-sex couples in certain jurisdictions. They may be similar to common-law marriages.
More specifically, unregistered cohabitation may refer to:
Unregistered cohabitation in Australia and De facto relationships in Australia
Domestic relationships and domestic partnerships in the Australian Capital Territory
Domestic relationships in New South Wales
De facto unions in the Northern Territory
De facto unions in Norfolk Island
De facto relationships in Queensland
Close personal relationships in South Australia
Personal relationships in Tasmania
Domestic relationships in Victoria
De facto unions in the Western Australia
Various de facto relationships in Canada Adult interdependent relationship in Alberta
Common-law relationships in Manitoba
Domestic partnership in Nova Scotia
Civil unions and de facto relationships in Quebec
De facto unions in Colombia
Unregistered cohabitation in Croatia
Unregistered cohabitation in Israel
Samenlevingscontract in the Netherlands
De facto relationships in New Zealand
Unregistered cohabitation in San Marino
Some other countries and sub-national regions recognize unregistered cohabitation, as listed in the Civil union article.