Taoiseach Leo Varadkar is to attend a gay Pride event in Belfast on Saturday.
He has confirmed he will be at a Pride breakfast to promote the rights of the LGBT community.
However he is unable to attend the annual Pride march through the city centre due to another engagement.
On Friday, the Taoiseach will make his first visit to Northern Ireland to meet with political leaders since taking over from Enda Kenny in June.
While there he will take the opportunity to attend a Pride breakfast on Saturday morning before heading to the All-Ireland senior football championship quarter-final between Dublin and Monaghan.
Garda officers have also been invited to join them.
The Rainbow Project, an LGBT support group in Northern Ireland, said Mr Varadkar's attendance at Saturday morning's Pride breakfast "is a testament to how far social attitudes have changed on this island".
Project director John O'Doherty added: "We hope that it will not be long before the consensus on LGBT equality which has been achieved in the Republic is mirrored in all parts of this island."