Rupert Frederick George Byron, 11th Baron Byron (13 August 1903 – 1 November 1983) was a British nobleman, peer, politician, and the eleventh Baron Byron, as a descendant of a cousin of Romanticpoet and writer, George Gordon Byron, 6th Baron Byron.
He married Pauline Augusta Cornwall (d.1993), daughter of T. J. Cornwall of Wagin, Western Australia, in 1931, and they had one daughter, the Hon. Isobel Ann Byron (1932).