The Taoiseach Enda Kenny has laid a wreath at the Cenotaph in Enniskillen as part of a Remembrance Day ceremony in the town.
President Michael D Higgins and Tánaiste Joan Burton will be among those attending a Remembrance service at St Patrick's Cathedral in Dublin this afternoon (3:15pm).
Foreign Affairs Minister Charlie Flanagan laid a wreath in Belfast, accompanied by the North's First Minister Peter Robinson and Secretary of State Theresa Villiers.
The ceremonies honour those who died in the First and Second World Wars, and other conflicts.