Regnum may refer to:
* Latin for kingdom or dominion, see
realm
A realm is a community or territory over which a sovereign rules. The term is commonly used to describe a monarchical or dynastic state. A realm may also be a subdivision within an empire, if it has its own monarch, e.g. the German Empire.
Etym ...
* ''Regnum'', Latin word for
Kingdom (biology)
In biology, a kingdom is the second highest taxonomic rank, just below domain. Kingdoms are divided into smaller groups called phyla.
Traditionally, some textbooks from the United States and Canada used a system of six kingdoms (Animalia, Plan ...
*
REGNUM News Agency, a Russian news agency
* ''
Champions of Regnum
''Champions of Regnum'' (previously known as ''Regnum Online'') is a fantasy massively multiplayer online role-playing game (MMORPG) developed and published by Nimble Giant Entertainment, a game development studio located in Argentina. The game f ...
'', a computer game
* An online database for
PhyloCode
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