Family name ثانیہ (Sania 
, ثانیہ, ثانیه) , in the world, is a common last name. The cognomen ثانیہ is characteristic of Mauritius, where it is quite a rare surname, Fiji, and Indonesia. Not in comparison with a country's population, it most frequently occurs in Indonesia, Bangladesh, and India. More frequently, ثانیہ is the forename as well as the last name.