How to say "Merci" in Vietnamese

In Vietnamese culture, gratitude is expressed with warmth and respect, and the level of formality depends heavily on your relationship with the person. Unlike in French, where merci is relatively neutral, Vietnamese often layers politeness through tone, context, and additional words. Addressing someone by their title (e.g., anh for older brother, chị for older sister) or using polite particles (ạ, nhé) can make your thanks feel more genuine and culturally appropriate. Never rush or sound perfunctory—Vietnamese speakers often pair gratitude with a slight bow or a smile to show sincerity.

1. Casual thanks to peers or younger people Use Cảm ơn alone or with a friendly particle for informal settings.

   • Cảm ơn, chị!
     Thanks, sis!
   • Cảm ơn, em nhé!
     Thanks, little one!

2. Polite thanks to elders or strangers Add ạ at the end to show deep respect, especially to those older or in positions of authority.

   • Cảm ơn bác ạ!
     Thank you, uncle/auntie!
   • Cảm ơn thầy giáo ạ!
     Thank you, teacher!

3. Formal thanks in professional or service contexts Combine Cảm ơn with rất nhiều (very much) or xin (a polite prefix) for extra emphasis.

   • Cảm ơn rất nhiều ạ!
     Thank you very much!
   • Xin cảm ơn quý khách!
     Thank you, honored guest!

4. Gratitude with a request or apology Vietnamese often softens requests or apologies by sandwiching Cảm ơn between phrases. This shows humility and consideration.

   • Xin lỗi, chị cho em mượn bút nhé? Cảm ơn chị!
     Excuse me, can I borrow your pen? Thank you, sis!
   • Em xin phép vào lớp ạ. Cảm ơn thầy!
     May I enter the class, teacher? Thank you!

👉 Most useful for daily life: Start by memorizing Cảm ơn ạ for polite situations and Cảm ơn for friends. Add nhé or em when thanking someone younger to sound friendly. These three variants cover 90% of everyday use.