Luke James Steele is an Australian musician, singer and songwriter. Steele is the vocalist and primary songwriter of the alternative rock band the Sleepy Jackson and is a member of the electronic music duo Empire of the Sun.

The Sleepy Jackson are an Australian alternative rock band formed in Perth, Western Australia. The band's name was inspired by a former drummer who was narcoleptic. The band revolves around the distinctive vocal style of multi-instrumentalist and songwriter Luke Steele. Stemming from a musical family, Luke's father Rick Steele is a local blues musician, and two of Luke's siblings are also musicians, with brother Jesse a former member of The Sleepy Jackson, and sister Katy, who fronts another Perth rock band, Little Birdy. While a series of acclaimed EPs brought The Sleepy Jackson to a broader musical attention of Australia, it was the release of their 2003 album Lovers and 2006 second album Personality – One Was a Spider, One Was a Bird that directed significant international focus upon the band.