1A polite, respectful way of saying 'who' — used to ask about someone's identity or name.
失礼ですが、どなたでしょうか？
Excuse me, who might you be?
会場にどなたか知っている方はいますか？
Is there anyone here you know?
お電話ありがとうございます。どなたをお呼びしましょうか？
Thank you for calling. Who would you like me to connect you to?