Family name Zigfrīds (Siegfried 
, Sigu 
, Зигфрид 
) , in all the world, is a common cognomen. The surname Zigfrīds is habitual in Liechtenstein, where it is quite a common surname, Eswatini, and Switzerland, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in the United States, Germany, and Ethiopia. Predominantly, Zigfrīds is the forename as well as the last name.