Lucius Orbilius Pupillus (114 BC – c. 14 BC) was a Latin grammarian of the 1st century BC, who taught a school, first at Benevento and then at Rome, where the poet Horace was one of his pupils. Horace (Epistles, ii) criticizes his old schoolmaster and describes him as plagosus (a flogger), and Orbilius has become proverbial as a disciplinarian pedagogue.