William Auld (6 November 1924 – 11 September 2006) was a Scottish poet, author, translator and magazine editor who wrote chiefly in Esperanto. Auld translated The Lord of the Rings and contributed to the translation of The Hobbit into Esperanto.
 Bibliography, selected
- La mastro de l' ringoj (The Lord of the Rings)
- 2000: La hobito (The Hobbit; with Christopher Gledhill; Auld translated the poems and songs)