John Henry Patrick 'Pat' Brain (17 March 1896 – 11 December 1945) was a Welsh cricketer. Brain was a right-handed batsman who played primarily as a wicketkeeper. He was born at Caerau, Glamorgan.Brain made his debut for Glamorgan in the 1920 Minor Counties Championship against Devon. He represented the county in 3 further Minor Counties fixtures in 1920.