Cognomen Giăng (John 
, Jean , Giăng) , globally, is a prevalent family name. The family name Giăng is characteristic of Latin America and the Caribbean, particularly Saint Vincent and the Grenadines, where it is a prevalent surname, Grenada, and Saint Lucia, where it is a widespread surname (explore the name in all countries). Not in comparison with a country's population, it most frequently occurs in Nigeria, Tanzania, and India. More frequently, Giăng is the forename as well as the last name.