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Throughout the world, Jaanus (Jaanus , Янус , Яанус ) is a rare gender-neutral first name. The forename Jaanus is characteristic of Estonia, where it is quite a common boy's name, Sweden, where it is a rare male name, and Russia, where it is a very rare epicene name. Likewise, Jaanus is the last name as well as the forename.
Jaanus is also a name for the fictitious and mythical characters: Janus , the Stargate Atlantis character; Janus Valker , the Rat-Man character; Janus , the comics character; Jens Janus Knudsen , character in H*A*S*H and Janus the Nega-Man .