Olm (disambiguation)

The olm (Proteus anguinus) is a species of amphibian.

Olm may also refer to:
 * Ocular larva migrans, an eye disease
 * Oil life monitor
 * Olm (and Megolm) is a cryptographic algorithm used by Matrix (protocol)
 * Olm, Luxembourg
 * OLM, Inc., formerly Oriental Light and Magic, a Japanese animation studio
 * Hans Werner Olm, German comedy artist
 * The Olms, a musical group made up of Pete Yorn and J.D. King
 * Olympia Regional Airport (IATA code)
 * Ordre Libanais Maronite, the Lebanese Maronite Order, religious order
 * Ordo Lectionum Missae, a Roman Catholic liturgical lectionary
 * Congregation of the Sisters of Our Lady of Mercy