Ireland participated in the Eurovision Song Contest 2016 with the song "Sunlight" written by Nicky Byrne, Wayne Hector and Ronan Hardiman. The song was performed by Nicky Byrne, who was internally selected in January 2016 by the Irish broadcaster Raidió Teilifís Éireann (RTÉ) to represent the nation at the 2016 contest in , Sweden. "Sunlight" was presented as the Irish entry during the announcement of Byrne's internal selection on 13 January 2016.

Ireland was drawn to compete in the second semi-final of the Eurovision Song Contest which took place on 12 May 2016. Performing during the show in position 7, "Sunlight" was not announced among the top 10 entries of the second semi-final and therefore did not qualify to compete in the final. It was later revealed that Ireland placed fifteenth out of the 18 participating countries in the semi-final with 46 points.

Prior to the 2016 Contest, Ireland had participated in the Eurovision Song Contest forty-nine times since its first entry in 1965. Ireland has won the contest a record seven times in total. The country's first win came in 1970, with then-18-year-old Dana winning with "All Kinds of Everything". Ireland holds the record for being the only country to win the contest three times in a row (in 1992, 1993 and 1994), as well as having the only three-time winner (Johnny Logan, who won in 1980 as a singer, 1987 as a singer-songwriter, and again in 1992 as a songwriter). In 2011 and 2012, Jedward represented the nation for two consecutive years, managing to qualify to the final both times and achieve Ireland's highest position in the contest since 2000, placing eighth in 2011 with the song "Lipstick". However, in 2013, despite managing to qualify to the final, Ryan Dolan and his song "Only Love Survives" placed last in the final. The Irish entries in 2014, "Heartbeat" performed by Can-Linn featuring Kasey Smith, and in 2015, "Playing with Numbers" performed by Molly Sterling, both failed to qualify to the final.

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