Francesco Robortello (Latin: Franciscus Robortellus; 1516–1567) was a Renaissance humanist, nicknamed Canis grammaticus ("the grammatical dog") for his confrontational and demanding manner.

Robortello's scientific approach to textual emendations laid the groundwork for modern Hermeneutics.

His commentary on Aristotle's Poetics formed the basis for Renaissance and 17th-century theories of comedy, influential in writing for the theatre everywhere save in England.

At the same time he was the conservative Aristotelian philosopher who urged a woman to submit her will to that of her husband on the basis of her moral weakness, in his libro politicos: Aristotelis disputatio (Venice, 1552, p. 175, quoted Comensoli 1989).

In the fields of philology and history, he sustained controversies in print with Carolus Sigonius and Vincenzo Maggi in the form of essay-like orations, correcting the editions published in Venice by Aldus Manutius, and even philological missteps of Erasmus.