Cognomen Сигна (Signe 
, Helfrid 
, Сигна 
) , in the entire world, is quite a common last name. The family name Сигна is habitual in Cameroon, where it is quite a common surname, France, where it is a rare surname, and Sweden. Not in comparison with a country's population, it is commonest in Cameroon, Philippines, and France. Likewise, Сигна is the forename as well as the last name.