Franz Eyssenhardt (6 March 1838 – 30 November 1901) was a German classical philologist born in Berlin.
He studied philology in Berlin, and subsequently became an instructor at the Werderscher gymnasium.
In 1868-69 he performed research in Italy, and in 1876 was appointed professor at the Johanneum in Hamburg.
Eyssenhardt was author of editions of Martianus Capella, Phaedrus, Macrobius, Apuleius and Ammianus Marcellinus.
Another noted work of his was an 1886 biography of historian Barthold Georg Niebuhr (1776-1831).