Family name Jannus (Jannus 
) , in the world, is a rare cognomen. The surname Jannus is habitual in Morocco, where it is a rare surname, Indonesia, where it is a very rare surname, and Spain. More frequently, Jannus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jannus | Philippines, Morocco, Netherlands, Indonesia, Antigua and Barbuda |
|
tony jannus Aviation pioneer and first pilot of the commercial flying era, US (b. 1889) |
|
| arnold jannus (b. 1919) |
|
Kat, Karthus, Rabanzo, Russell, Llaneta, Javillo, Echavez, Hutapea, Viljoen, Marpaung, Sipayung, Sumbilla, Licudine, Tambunan, Estoesta, Verharen, Sihombing, Benjamins, Panjaitan, Villacruz, Butarbutar, Simanjuntak, Bugawan, Siagian, Siahaan, Sitorus, Lin, Lim, Smit, Arca, Abad, Luba, Serna, Sousa, Souza, Adaro, Evangelista, Costa, Purba, Lipio, Vries, Manalu, Santos, Benade, Boelen, Rhodus, Goecke, Foster, Preez, and Lumbantoruan