Nguyen is a common Vietnamese surname that originates from the Nguyen Dynasty, which ruled Vietnam from the 19th century until the mid-20th century. It is one of the most common surnames in Vietnam, representing approximately 40% of the population. Nguyen is often associated with honor, respect, and loyalty in Vietnamese culture. Many notable figures in Vietnamese history and literature have been named Nguyen. The name is also popular among Vietnamese immigrants and their descendants in countries around the world.