John Brett may refer to: John Brett (artist) (1831–1902), British artist associated with the Pre-Raphaelite movement John Brett (chronicler) ( 1556), English author of Brett's Narrative, about the Marian exiles John Brett (bishop) (died 1756), bishop of Elphin John Brett (Royal Navy officer) (died 1785), Royal Navy admiral John Brett (rugby union), English international rugby union player John Aloysius Brett (1879–1955), administrator in British India John Michael Brett, nom de plume of English author Miles Tripp (1923–2000) John Watkins Brett (1805–1863), English telegraphic engineer John Henry Brett (1835–1920), Irish architect, builder, and county surveyor
See also Jack Brett (1917–1982), British motorcycle racer