Jonathan Tan (born 11 March 2002) is a Singaporean swimmer. He represented Singapore at the 2019 World Aquatics Championships held in Gwangju, South Korea and he finished in 34th place in the heats in the men's 50 metre freestyle event. In 2018, he represented Singapore at the Asian Games held in Jakarta, Indonesia and he competed in one individual event and two relays events. He finished in 14th place in the heats in the men's 200 metre freestyle event. He won the bronze medal both in the men's 4 × 100 m freestyle relay and men's 4 × 200 m freestyle relay events.