Sir Thomas Boaz Allen CBE FRCM (born 10 September 1944) is an English operatic baritone. He is widely admired in the opera world for his voice, the versatility of his repertoire, and his acting—leading many to regard him as one of the best lyric baritones of the late 20th century. In October 2011, he was appointed Chancellor of Durham University, succeeding Bill Bryson.