Dimosthenis Dialetis (Greek: Δημοσθένης Διαλέτης; 1869–1954) was a Greek soldier who rose to the rank of lieutenant general. Born in , Aetolia-Acarnania, Dimosthenis Dialetis enlisted in the Hellenic Army on 23 September 1885, enrolling in the NCO preparatory school, from which he graduated as a sergeant on 23 July 1887. After attending the NCO officer academy and being commissioned as an infantry second lieutenant on 10 August 1901.