Cyprus participated in the Eurovision Song Contest 2015 with the song "One Thing I Should Have Done" written by Mike Connaris and Giannis Karagiannis and performed by Karagiannis. The Cypriot broadcaster Cyprus Broadcasting Corporation (CyBC) returned to the Eurovision Song Contest after a one-year absence following their withdrawal in 2014 due to financial and budget restrictions, and organised the national final Eurovision Song Project in order to select the Cypriot entry for the 2015 contest in Vienna, Austria. The national final featured 54 entries competing in a nine-week-long process, resulting in the selection of Karagiannis with "One Thing I Should Have Done" at the final on 1 February 2015, where six entries remained.
Promotional activities for the entry prior to the contest included performances of the song in both Amsterdam and London. Cyprus was drawn to compete in the second semi-final of the Eurovision Song Contest which took place on 21 May 2015. Performing during the show in position 15, "One Thing I Should Have Done" was announced among the top 10 entries of the second semi-final and therefore qualified to compete in the final on 23 May. It was later revealed that Cyprus placed sixth out of the 17 participating countries in the semi-final with 87 points. In the final, Cyprus performed in position 11 and placed twenty-second out of the 27 participating countries, scoring 11 points.
Background
Prior to the 2015 contest, Cyprus had participated in the Eurovision Song Contest thirty-one times since their debut in the 1981 contest. Its best placing was fifth, which it achieved three times: in the 1982 competition with the song "Mono i agapi" performed by Anna Vissi, in the 1997 edition with "Mana mou" performed by Hara and Andreas Constantinou, and the 2004 contest with "Stronger Every Minute" performed by Lisa Andreas. Cyprus' least successful result was in the 1986 contest when it placed last with the song "Tora zo" by Elpida, receiving only four points in total. However, its worst finish in terms of points received was when it placed second to last in the 1999 contest with "Tha'nai erotas" by Marlain Angelidou, receiving only two points. The nation failed to qualify for the final in with "An me thimasai" performed by Despina Olympiou.
The Cypriot national broadcaster, Cyprus Broadcasting Corporation (CyBC), broadcasts the event within Cyprus and organises the selection process for the nation's entry. In October 2013, CyBC announced their withdrawal from the citing public opinion regarding the 2012–2013 Cypriot financial crisis and budget restrictions as factors that influenced this decision. Following rumors since late May 2014 that the nation would be returning to the contest, CyBC confirmed their intentions to participate at the 2015 Eurovision Song Contest on 14 July 2014. Cyprus has used various methods to select the Cypriot entry in the past, such as internal selections and televised national finals to choose the performer, song or both to compete at Eurovision. CyBC opted to organise a national final based on the Swedish Eurovision selection Melodifestivalen in order to select the 2015 Cypriot entry with a trailer for the selection being first seen along with their participation confirmation. The national final was originally planned to be a collaboration with music channel MAD TV, however the collaboration was cancelled in October 2014 due to the low amount of submissions received.
Before Eurovision
Eurovision Song Project
Eurovision Song Project was the national final format developed by CyBC in order to select Cyprus' entry for the Eurovision Song Contest 2015. The competition involved a nine-week-long process that commenced on 7 December 2014 and concluded with the final on 1 February 2015. The shows took place at the CyBC studios in Nicosia, hosted by Antri Karantoni and were broadcast on RIK 1, RIK Sat as well as online via the broadcaster's website cybc.cy. The final was also streamed online at the official Eurovision Song Contest website eurovision.tv.