Family name Janusova (Janusova 
, Янусова 
) , all around the world, is a rare cognomen. The family name Janusova is habitual in Eastern Europe, particularly Slovakia, where it is quite a rare surname, Czechia, and Belarus, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Eastern Europe, particularly Czechia, Slovakia, and Russia.