Who/Whom

1. Whom should I report to is correct.

You use "whom" when it involves an objective pronoun and "who" when it involves a subjective pronoun.

Example:

1. Whom should I report to?
A: I should report to him.
-"him" is an objective pronoun so you use "whom".

2. Who bought the shirt?
A: He bought the shirt.
-"he" is a subjective pronou

1) Whom should I report to?
2) Who should I report to?
What Gilysse wrote is correct.
However, 'Who should I report to?' is not grammatcally wrong.
BUT it should be 'To whom should I report?'

1) Whom should I report to? 
2) Who should I report to?
What  Gilysse wrote is correct.
However, 'Who should I report to?' is not grammatically wrong.
BUT it should be 'To whom should I report?' 

askshameer1) Whom should I report to?

2) Who should I report to?

Which one is correct and why?

/Sameer

All of the following are correct. I have marked (<<<) the one which is most often used.

To whom should I report?
Whom should I report to?
Who should I report to? <<<

CJ

Whom should I report to?

Neither. The correct answer is "To whom should I report?"

Who is the report about or whom is the report about?

Whom should I report to

For who, whom did you do the report