Jennifer Dugwen Chieng (born April 29, 1986) is an American-born boxer and mixed martial artist who represents the Federated States of Micronesia in sports. She competed at the 2016 Summer Olympics in the women's boxing - lightweight event, in which she was eliminated in the round of 16 by Mikaela Mayer. She was the flag bearer for her country at the Parade of Nations.

Chieng made her pro MMA debut on Oct. 13, 2018 at Bellator 208 with a TKO victory over Jessica Ruiz.

Chieng faced Alyssa Linduska on May 11, 2022 at Invicta FC 47. She lost the bout via unanimous decision.