Same-sex union legislation
Same-sex marriage is legal in the following countries: Andorra, Argentina, Australia, Austria, Belgium, Brazil, Canada, Chile, Colombia, Costa Rica, Cuba, Denmark, Ecuador, Estonia, Finland, France, Germany, Greece, Iceland, Ireland, Liechtenstein, Luxembourg, Malta, Mexico, the Netherlands, New Zealand, Norway, Portugal, Slovenia, South Africa, Spain, Sweden, Switzerland, Taiwan, Thailand, the United Kingdom, the United States, and Uruguay. Same-sex marriage is recognized, but not performed, in Israel and the United States territory of American Samoa.
Source: Wikipedia — Same-sex union legislation (CC BY-SA 4.0)