Lin Yun (林允), also known by her English name Jelly Lin, is a Chinese actress. She is known for her role as the female lead in the 2016 film The Mermaid.

Lin was born Fei Xia (费霞) in Huzhou, Zhejiang, on April 16, 1996. Her father, Fei Jianhua (费建华), is a porter, and her mother is a housewife. She studied at the Huzhou No. 12 Middle School, and then attended a performing arts school in Beijing.