Pressure is set to build on Northern Ireland's politicians to allow a popular vote on same-sex marriage after the apparent passing of the marriage referendum in the Republic.
Sinn Féin said the equality rights for same-sex couples must be shared by citizens in the north and it would continue to campaign for the reform.
Caitriona Ruane, the party's Stormont Assembly Member for South Down, said the referendum showed change was possible and inevitable when people fully engage in politics.
"The marriage equality rights that will be enjoyed by Irish citizens in the south must be shared by citizens in the north," Ms Ruane said.
"Sinn Féin will continue to campaign for marriage equality for all in the North and to end the discrimination against our LGBTI community."
Northern Ireland is the only part of the UK which does not have gay marriage.
Unionists earlier this year rejected a proposal from Deputy First Minister Martin McGuinness to hold a referendum on the issue.
Sinn Féin also said the influx of emigrants returning home to vote in the day before polling yesterday highlights the need to tackle the issue of voting rights for the Irish diaspora and for Irish citizens in Northern Ireland.
"I'm delighted the people have voted overwhelmingly in favour of marriage equality for all," Ms Ruane said.
"This referendum was all about equality, inclusion and respect for our LGBTI brothers and sisters.
"The campaign energised and engaged a whole new generation of young people in the democratic process.
"This result shows when people fully participate in the political process that change is not only possible but inevitable."
