Definition of whose in English:


pronoun & possessive determiner

  • 1Belonging to or associated with which person.

    [as determiner] ‘whose round is it?’
    [as pronoun] ‘a car was parked at the curb and Juliet wondered whose it was’
  • 2[as determiner] Of whom or which (used to indicate that the following noun belongs to or is associated with the person or thing mentioned in the previous clause)

    ‘he's a man whose opinion I respect’
    ‘a willow tree whose branches reached right to the ground’


On the differences in use between whose and who's, see who's


Old English hwæs, genitive of hwā who and hwæt what.