+1

Dear Sir/Madam

Please let me know which of the following are correct.

1. Who are you talking to?

2. Who are you talking?

3. Whom are you talking to?

4. Whom are you talking?


Thank you in advance

Kind Regards

+2

Nos. 1 and 3 are correct. No. 3 is very formal.

CB

Comments  
Doha00111. Who are you talking to?

Correct.

Doha00113. Whom are you talking to?

This is correct but very formal and not common in everyday, casual situations. It's the kind of formal English that would be used when speaking in court or academic situations.

 Cool Breeze's reply was promoted to an answer.