Both who's and whose come from the pronoun who (shocking, right?). Who's is a contraction, meaning it's two words stuck together. ... Whose is a possessive pronoun. Use it when you're asking (or telling) to whom something belongs.

Who's man or whose man?

Some of these tips may address common spelling errors, while others will examine the many nuances of the English language. Use "who's" when you mean "who is" or "who has." "Whose" is the possessive of "who" or "which." Examples: Who's that man wearing a red coat?

Whose or who's in a sentence?

Remember, whose is possessive. That means that whose is normally followed by a noun. If the sentence has a noun immediately after the whose or who's, you should use whose. If there's no noun or an article, use who's.