Leslie Holdsworth Allen (21 June 1879 – 5 January 1964) was an Australian academic and poet.
In 1911, Allen was appointed as a senior lecturer in classics and English at Sydney Teachers College.
During his tenue at Duntroon he produced plays for the Canberra Society of Arts and Literature and wrote poetry and children's verse.
The Haydon-Allen Lecture Theatre is in part a memorial to his work at the Australian National University.
[4] Entry in The Oxford Companion to Australian Literature; Wilde, Hooton, Andrews (eds).