Ireland in the Eurovision Song Contest 2018

Ireland was represented at the Eurovision Song Contest 2018 with the song "Together", sung by Ryan O'Shaughnessy and written by O'Shaughnessy, Mark Caplice and Laura Elizabeth Hughes. The Irish song and the singer for the 2018 contest in Lisbon, Portugal were internally selected by the Irish broadcaster Raidió Teilifís Éireann (RTÉ). O'Shaughnessy's internal selection was announced on 31 January 2018, while "Together" was presented on 9 March 2018.

Ireland was drawn to compete in the first semi-final of the Eurovision Song Contest which took place on 8 May 2018. Performing during the show in position 18, "Together" was announced among the top 10 entries of the first semi-final and therefore qualified to compete in the final on 12 May. It was later revealed that Ireland placed sixth out of the 19 participating countries in the semi-final with 179 points. In the final, Ireland performed in position 24 and placed sixteenth out of the 26 participating countries, scoring 136 points.