Nguyen is the most popular surname in Vietnam, soon to be the most popular in Australia, and very popular in the United States of America. The last name Nguyen is so popular that it surpasses Smith and Jones in popularity.
Ironically, most non-Vietnamese pronounce it wrong, and the guides on the internet just add to the mispronounciation. Frustrated by the miseducation of how to pronounce the name correctly, and needing a professional guide for my friends and colleagues to help them learn my name easier, I made the guide above by myself.
You can share it to your friends by using one of the link nguyen.org or simply put it in your email signature like I did with mine to help people whom you communicate with via email.