Terry Hee Yong Kai OLY (Chinese: 許永凱; born 6 July 1995) is a Singaporean badminton player.

[5] In mixed doubles with Jessica Tan, Hee won his first World Tour title at the 2022 India Open.

[20] In 2024, Hee and Tan started the year strong by making it into the semi-final of Malaysia Open, a BWF World Tour 1000 event.

Only the first 13 eligible pairs were allocated slots via the Race to Paris rankings, while the remaining three spots were given to the continental champions of America, Africa and Oceania.

[22] In the badminton mixed-double events in the 2024 Paris Olympics, Hee and Tan were assigned to Group D together with Feng Yanzhe / Huang Dongping of China (2nd seed), Chen Tang Jie / Toh Ee Wei from Malaysia, and the American pair of Vinson Chiu / Jennie Gai.

2 pair Feng and Huang next, the duo could not overcome their rivals, losing 21-13, 21-17, thus missing out on the quarter-finals [23] Hee and Tan ended their Olympics campaign with a win though as they beat United States’ Chiu and Gai, 21–17, 21–12 in the last group fixture.

Post-Olympics, Hee and Tan continued to contest in major World Tour tournaments, but all ended with 1st round exits.

While competing in the Macau Open, where they were seeded second, their campaign was abruptly halted in the first round against Ye Hong Wei and Nicole Chan (Chinese Taipei).

[24] It was announced in November 2024 that Hee would form a new partnership with Jin Yujia, as Jessica Tan had not fully recovered from her injuries and was not sufficiently competition-fit.

[28] Their victory at the 2021 Czech Open, defeating Russians Lev Barinov and Anastasiia Boiarun, was their first tournament as a married duo.