Zun Than Sin (; born 26 June 1995) is a Burmese model, musician, and beauty pageant titleholder who was crowned Miss Universe Myanmar 2017 and represented Myanmar at the Miss Universe 2017 pageant.
Zun was born and raised in Yangon to an ethnic Rakhine family. Her father is a head doctor from Yangon Ear Nose & Throat Hospital, while her mother is a housewife.
Zun graduated with double degrees in Burmese Literature and Dramatic Arts from National University of Arts and Culture in Yangon.
Having previously competed in beauty pageants before, she was crowned as Miss Universe Myanmar 2017 on October 6, 2016, by outgoing titleholder Htet Htet Htun. She represented Myanmar at Miss Universe 2017.
She competed at Miss Universe 2017 but Unplaced.