Realm (disambiguation)

A realm is the dominion of a king or queen; a kingdom. Realm may also more broadly refer to everything which falls within a certain set of parameters.

Realm may also refer to:

Maths and science

 * biogeographic realm, the largest scale bio-geographic division of the Earth's surface
 * A hyperplane in geometry
 * Domain (biology), the highest taxonomic rank of life, also called realm
 * Realm (virology), the highest taxonomic rank of viruses

Religion

 * Realm, an English translation for two terms in Buddhist cosmology:
 * Trailokya, or three realms
 * Six realms (gati)
 * Plane (esotericism)

Information technology

 * Realm (database), an object database and platform created primarily for mobile devices maintained by Realm Inc.
 * A URL pattern in OpenID protocol, for which the OpenID authentication is valid
 * An ID for an instance of a server software- HTTP transmits Realm when answering to a Basic access authentication request to distinguish different areas on server
 * A scope of operation in networking or in security — as in Active Directory realms

Arts and media

 * Realms (album), by Cindy Wilson, 2023
 * Realm (magazine), a British coffee-table magazine
 * Realm Media, formerly Serial Box, an American audio entertainment company
 * "Realms", a song by Hawkwind from Space Bandits
 * The Realm (film), a 2018 Spanish thriller film

Games

 * Realm (World of Warcraft), a server cluster for playing World of Warcraft
 * Realm (video game), a 1996 platform shooter
 * Realms (video game), a 1991 real-time strategy game by Graftgold
 * The Realm Online, one of the first massively multiplayer online role-playing games

Other uses

 * Commonwealth realm, one of the states of the Commonwealth of Nations that recognize King Charles III as monarch
 * German Reich, or German Realm, the nation state of the German people