Lesbian, gay, bisexual and transgender (LGBT) rights in the British Overseas Territory of Saint Helena, Ascension and Tristan da Cunha have gradually evolved over the years.

Discrimination on the basis of sexual orientation is banned in the entire territory through the Constitution Order 2009 and same-sex marriage has been legal on the islands since 2017.

Same-sex marriage has been legal on Ascension Island since 1 January 2017,[2][3] on Tristan da Cunha since 4 August 2017,[4][5] and since 20 December 2017 on Saint Helena.

[10][11] On 23 February 2017, after consultation with the Governor of Saint Helena, the Tristan da Cunha Island Council agreed that a law to legalise same-sex marriage would go forward formally for adoption.

[13][14][15] On 27 April 2016, the Saint Helena Executive Council announced a public consultation on a draft of a new marriage ordinance, which, if approved, would allow same-sex couples to marry.

This would allow another same-sex marriage ordinance to be debated before the end of the year, and avoid a full Supreme Court hearing on the issue, which was expected in January 2018.

[37][38] The St Helena, Ascension and Tristan da Cunha Constitution Order 2009 bans discrimination based on sexual orientation.