If you are contracting it is - yes.
If you are not contracting it is - no.
Confession pt 3 - Grammatical Edition
The only reason I know the difference between whose and who’s is because of the show “Whose Line is it Anyway?” and the only reason I know when to use the word whom is because of my favorite knock-knock joke.
Knock Knock?
Who’s there?
To
To Who?
To Whom!!!!!
