"Sinéad" is the second single from Within Temptation's fifth studio album, The Unforgiving, released on 15 July 2011.

[1] Its release was announced alongside the unveiling of its artwork on 15 April 2011.

[2] On 19 May 2011, the band announced that the single would contain special dance remixes,[3] confirming on 10 June that there will be four different versions by Benno de Goeij, Scooter, VNV Nation and Groove Coverage.

[4] "Empty Eyes" was the B-side on the five-track maxi CD.

[5] Two-track German CD Five-track maxi CD