Robert Brendan McDowell MRIA (14 September 1913 – 29 August 2011) was an Irish historian. He was a Fellow Emeritus and a former Associate Professor of History at Trinity College Dublin. He was born in Belfast. He was referred to colloquially as "RB", "McDowell" or "the White Rabbit". His politics were strongly Unionist and he was a member of the British Conservative Party.