You say hello in Romanian as:

  • Bună – “Hi / Hello” (informal, friendly)
  • Bună ziua – “Good day / Hello” (polite, more formal)

If you want time‑of‑day greetings, you can also use:

  • Bună dimineața – good morning
  • Bună seara – good evening

For most situations, especially if you are unsure, “Bună ziua” is a safe and polite choice.