Othon Riemann (13 June 1853, in Nancy – 16 August 1891, in Interlaken) was a French classical philologist and archaeologist.
While a member, he visited various libraries in Italy, during which he collated manuscripts of Livy.
He then conducted archaeological research of the Ionian Islands, about which, he produced a massive report.
From 1885 he taught classes at the École pratique des hautes études, while still maintaining his post at the ENS.
He died on August 16, 1871 (age 38) from the effects of a fall on the Morgenberg, located near Interlaken, Switzerland.