Leonard Norman Cohen CC GOQ (September 21, 1934 – November 7, 2016) was a Canadian singer-songwriter, poet, and novelist. His work explored religion, politics, isolation, depression, sexuality, loss, death and romantic relationships. Cohen was inducted into the Canadian Music Hall of Fame, the Canadian Songwriters Hall of Fame, and the Rock and Roll Hall of Fame. He was invested as a Companion of the Order of Canada, the nation's highest civilian honour. In 2011, Cohen received one of the Prince of Asturias Awards for literature and the ninth Glenn Gould Prize.

Cohen pursued a career as a poet and novelist during the 1950s and early 1960s, and did not begin a music career until 1967 at the age of 33. His first album, Songs of Leonard Cohen (1967), was followed by three more albums of folk music: Songs from a Room (1969), Songs of Love and Hate (1971) and New Skin for the Old Ceremony (1974). His 1977 record Death of a Ladies' Man, co-written and produced by Phil Spector, was a move away from Cohen's previous minimalist sound. In 1979, Cohen returned with the more traditional Recent Songs, which blended his acoustic style with jazz, East Asian, and Mediterranean influences. Cohen's most famous song, "Hallelujah", was first released on his studio album Various Positions in 1984. I'm Your Man in 1988 marked Cohen's turn to synthesized productions. In 1992, Cohen released its follow-up, The Future, which had dark lyrics and references to political and social unrest.

Cohen returned to music in 2001 with the release of Ten New Songs, which was a major hit in Canada and Europe. His 11th album, Dear Heather, followed in 2004. Following a successful string of tours between 2008 and 2013, Cohen released three albums in the final four years of his life: Old Ideas (2012), Popular Problems (2014) and You Want It Darker (2016), the last of which was released three weeks before his death. A posthumous album, Thanks for the Dance, was released in November 2019, his fifteenth and final studio album.

Leonard Cohen was born in the Montreal suburb of Westmount, Quebec on September 21, 1934. His Lithuanian-born mother, Marsha ("Masha") Klonitsky (1905–1978), was the daughter of a Talmudic writer, Rabbi Solomon Klonitsky-Kline, and emigrated to Canada in 1927. His paternal grandfather, whose family had moved from Poland to Canada, was Lyon Cohen, the founding president of the Canadian Jewish Congress. His parents gave him the Jewish name Eliezer, which means 'God helps'. His father, Nathan Bernard Cohen (1891–1944), who owned a substantial clothing store, died when Cohen was nine years old. The family observed Orthodox Judaism, and belonged to Congregation Shaar Hashomayim, to which Cohen retained connections for the rest of his life. On the topic of being a kohen, Cohen told Richard Goldstein in 1967, "I had a very Messianic childhood. I was told I was a descendant of Aaron, the high priest."