Perez
Improved:
You can't really pick one to be a "popular" last name, there is a whole lot of Abreu, Vargas, Castillo, Cruz, Marte, and other spanish last names. There are alot of uncommon ones as well, but you tend to meet many typical spanish surnames.
The communist nation of Cuba is home to many people. In the population the most common last name is Castro.
The most popular last name in Russia is IVANOV.
The most popular last name in India is Patel.
The most popular last name in the USA is Smith.
Garcia. It is the 8th most popular last name in America, making it the 1st most popular HISPANIC last name in America.
Well its not really a popular last name its Reed.
The most popular last name I would think would be... Young, Thomas, or Williams
The most popular Hispanic last name starting with G is Garcia.
The most popular last name in Croatia is Babić.
The most popular surname is Cohen.
Nguyen is a popular last name in Vietnam.
"Chen" occurpied over 60% in overall.