Charles Duff (7 April 1894 – 15 October 1966) was a Northern Irish writer of books on language learning.
He resigned from the Foreign Office in the 1930s, claiming it was solidly supportive of fascism in Spain and ready to back a similar system in Britain.
[2] After he retired, Duff taught linguistics and languages in London and Singapore, while writing travel guides, histories, satires, and a series of text books for the active self-learner.
His many translations included works by Francisco de Quevedo, Émile Zola, B. Traven, Maxim Gorky, and Arnold Zweig.
[8] George Orwell, in a 1933 letter to Eleanor Jacques, described James Joyce and the Plain Reader as "weak trash, which would give the impression that J[oyce] was a writer on the [Hugh] Walpole—[J.