Cognomen Sajf (سيف 
, Саиф 
, סיף 
) , all around the world, is a common surname. The cognomen Sajf is habitual in Western Asia, particularly Yemen, where it is quite a common surname, Jordan, and Palestinian Territory (explore the name in all countries). Not in comparison with a country's population, the name is most common in Yemen, Egypt, and Iraq. More frequently, Sajf is the forename as well as the last name.