Jun Jie Calvin Quek is a Singapore sprinter who specialises in the 400m and 400m hurdles.

As a schoolboy, Quek was a perennial medallist at National Schools in both events.

[2] He first broke the 400m hurdles national record in February 2022 with a time of 51.73s at a Southeast Asian Games Trial.

[4] At the 2023 SEA Games in Phnom Penh, he ran 50.75s to secure a bronze again.

[6] In the World University Games, he ran 50.43s to rewrite his 400m hurdles national record.