... Is that pronounced how it looks like it is? I don't know if I could keep a straight face the first few times. That being said, it's their name, just use it, christ. My current boss still misspells my last name despite working together for 8 months and I take huge insult every time he does it, and that's way less of an insult than this. Even if you can't help yourself, just call them *Appropriate title* Nguyen instead.