Janus may refer to:
Janus (mythology), the two-faced god of gates, doors, doorways, beginnings, and endings in Roman mythology
Janus (moon), a moon of SaturnJanus Patera, a shallow volcanic crater on Io, a moon of JupiterJanus (simulation), a military combat simulation first developed in the late 1970s by the Lawrence Livermore National Laboratory's Combat Simulation Laboratory
Society of Janus, a San Francisco based BDSM education and support group
Janus Capital Group, an investment company based in Denver, Colorado
Zündapp Janus, a bubble car model by Zündappa Janus word, or
auto-antonym: a word with two opposite meanings
Janus (TV series), A television series created by the Australian Broadcasting Commission with two story lines: the criminal family being prosecuted and the police/judicial process
Schempp-Hirth Janus, a two-seater glider
HMS Janus, British naval ships
See more at Wikipedia.org...