Cognomen 贾斯汀 (Justin 
, Justine , 贾斯汀 
) , in all the world, is a widespread family name. The family name 贾斯汀 is habitual in Saint Lucia, where it is a common surname, Brunei, where it is quite a common surname, and Tanzania (explore the name in all countries). Measured by absolute frequency, the name is most common in Sub-Saharan Africa, particularly Nigeria, Tanzania, and Cameroon. More frequently, 贾斯汀 is the forename as well as the last name.