Surname 西德尼 (Sidney 
, Sydney , 西德尼) , in all the world, is a common family name. The family name 西德尼 is habitual in Saint Lucia, where it is quite a common surname, Jersey, and Cabo Verde (explore the name in all countries). Measured by absolute frequency, it is the most numerous in the United States, Nigeria, and Australia. More prevalently, 西德尼 is the forename as well as the last name.