Last name Estrif (Strife 
, Estrif, Strif 
) , in all the world, is quite a rare family name. The family name Estrif is habitual in Taiwan, where it is a rare surname, Slovenia, and Indonesia. In absolute terms, this name is the most popular in Indonesia, the United States, and Taiwan. Much less frequently, Estrif is the forename as well as the last name.