Harry Barr (born in 1896 in London) was a painter. He produced a large body of work, the majority in watercolour. He studied at the Westminster School of Art where he was taught by the artist Walter Sickert and earned his diploma in 1915. Sickert remained an artistic mentor and a friend until he died in 1942. Barr was also good friends from childhood with David Bomberg (they both grew up in Whitechapel in the East End of London) until Bomberg's death in 1957.