Sir Peter Thomas Blake, CBE, RDI, (born 25 June 1932, in Dartford, Kent) is an English pop artist, best known for his design of the sleeve for the Beatles' album Sgt. Pepper's Lonely Hearts Club Band. He has also designed the Jersey for Chelsea Football Club for the 2010 season. He lives in Chiswick, London, UK.

During the late 1950s, Blake became one of the best known British pop artists. His paintings from this time included imagery from advertisements, music hall entertainment, and wrestlers, often including collaged elements. Blake was included in group exhibitions at the Institute of Contemporary Arts and had his first solo exhibition in 1960. It was with the 'Young Contemporaries' exhibition of 1961 where he was exhibited alongside David Hockney and R.B. Kitaj that he was first identified with the emerging British Pop Art movement. Blake won the (1961) John Moores junior award for his work Self Portrait with Badges. He first came to wider public attention when, along with Pauline Boty, Derek Boshier and Peter Phillips, he was featured in Ken Russell's Monitor film on pop art, Pop Goes the Easel, which was broadcast on BBC television in 1962. From 1963 Blake was represented by Robert Fraser which placed him at the centre of swinging London and brought him into contact with leading figures of popular culture.

The Sgt. Pepper's sleeve has become an iconic work of pop art, much imitated and Blake's best known work. Producing the image necessitated the construction of a set with cut-out photographs and objects, such as flowers, centred around a drum (sold in auction in 2008) with the title of the album. Blake became a Royal Academician in 1981, a CBE in 1983 and in 2002 Blake received a knighthood for his services to art. Retrospectives of Blake's work were held at the Tate in 1983 and Tate Liverpool in 2008.[4] In February 2005, the Sir Peter Blake Music Art Gallery, located in the School of Music, University of Leeds, was opened by the artist.