Jonathan Fruoco, FRHistS is a French historian who specializes in medieval English literature, with a specific focus on the polyphony of Geoffrey Chaucer's poetry, and historical sociolinguistics. In 2022, he was elected a Fellow of the Royal Historical Society.

Polyphony is a type of musical texture consisting of two or more simultaneous lines of independent melody, as opposed to a musical texture with just one voice (monophony) or a texture with one dominant melodic voice accompanied by chords (homophony).