Christopher Vernon Hassall (24 March 1912 – 25 April 1963) was an English actor, dramatist, librettist, lyricist and poet, who found his greatest fame in a memorable musical partnership with the actor and composer Ivor Novello after working together in the same touring company. He was also a noted biographer of Rupert Brooke (1964, Faber and Faber) and Edward Marsh (1958, James Tait Black Memorial Prize 1959).