Regnum may refer to:
* Latin for kingdom or dominion, see
realm
* ''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, P ...
*
REGNUM News Agency
REGNUM News Agency is a Russian nationwide online news service disseminating news from Russia and abroad from its own correspondents, affiliate agencies and partners. REGNUM covers events in all regions of Russia as well as neighboring countries ...
, 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 ...
'', a computer game
* An online database for
PhyloCode
The ''International Code of Phylogenetic Nomenclature'', known as the ''PhyloCode'' for short, is a formal set of rules governing phylogenetic nomenclature. Its current version is specifically designed to regulate the naming of clades, leaving the ...
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