Tan Sze En (born 19 October 2000) is a Singaporean artistic gymnast who represented her country at the 2020 Olympic Games and the 2019 World Championships.

[1] Following the 2016 season, Tan moved to the United States with her family so she could train at Legacy Elite Gymnastics in Illinois.

Tan was set to compete at the 2017 Southeast Asian Games but had to withdraw after fracturing her ankle in training.

[7] Tan is the second Singaporean female gymnast to qualify to an Olympic Games, after Lim Heem Wei became the first in 2012.

[3][8] At the Tokyo Olympics, Tan was limited to the balance beam and the floor exercise due to a wrist injury.