Khun may refer to:
Khun (, long vowel, middle tone), the colloquial Thai name for the Golden Shower Tree Khun (courtesy title) (, short vowel, middle tone), a common Thai honorific Khun (noble title) (, short vowel, rising tone), a former royally bestowed Thai noble title Khün language
Places Khun, Bushehr, a village in Bushehr Province, Iran
See also KHUN, an American radio station Thai name