Franz Ludwig Carl Friedrich Passow (20 September 1786 – 11 March 1833) was a German classical scholar and lexicographer.
In 1807 he was appointed to the professorship of Greek literature at the Weimar gymnasium by Johann Wolfgang von Goethe, whose acquaintance he had made during a holiday tour; his lessons were attended by the young Arthur Schopenhauer.
In 1815 he became professor of ancient literature at the University of Breslau, where he continued to live until his death.
Passow's great work was his Handwörterbuch der griechischen Sprache (1819–1824) ("Dictionary of the Greek Language"), originally a revision of Johann Gottlob Schneider's lexicon, which appeared in the fourth edition (1831) as an independent work, without Schneider's name.
Literatur und Kunstgeschichte (“Foundations of Greek and Roman Literature and History of Art”; 2nd ed., 1829) and editions of Persius, Longus, Tacitus's Germania, Dionysius Periegetes, and Musaeus.