Hozier was born in Bray, County Wicklow, the son of a musician. He began a degree in music at Trinity College, Dublin, but dropped out midway through his first year in order to record demos for Universal Music. While at Trinity, he became involved with the Trinity Orchestra. He was a member of Anúna from 2008 to 2012, and appears as a soloist on their 2012 release Illumination singing "La Chanson de Mardi Gras". He toured and sang with the group internationally including performances in Norway and the Netherlands.
In 2013, Hozier released the EP Take Me to Church (also containing "Like Real People Do", "Angel of Small Death and The Codeine Scene" and a live version of "Cherry Wine"), with the title track becoming his breakthrough single after it went viral on YouTube. It reached number one on the Irish iTunes singles chart and number two in the official chart on 25 October 2013. Hozier followed up Take Me to Church with the new EP From Eden (also containing "Work Song", "Arsonist's Lullabye" and a live version of "To Be Alone"), and a number of festival tour dates and television appearances in the United States. Hozier released his self-titled album, Hozier on 19 September 2014. It had five singles including "Take Me to Church", "Work Song", and "From Eden", which were hits on his earlier EPs. On December 5, 2014, it was announced that "Take Me to Church" was nominated at the 57th Annual Grammy Awards for Song of the Year in 2015.
He performed for the Victoria's Secret Fashion Show 2014, Saturday Night Live, and Late Night with Seth Meyers.
He performed his hit “Take Me to Church” with Annie Lennox at the 2015 Grammy Awards.