Jason Teh Jia Heng (Chinese: 郑加恒; pinyin: Zhèng Jiā Héng; born 25 August 2000) is a Singaporean badminton player.

[1] Teh won the bronze medal as he was in the men's team at the 2019 SEA Games, where Singapore finished as semi-finalists.

[9] He then lost to Thailand's Kunlavut Vitidsarn in the semifinals, in straight games, 11–21, 12–21, thus ending up with the joint bronze medal.

During the last week of September, Teh reached his first BWF World Tour final at the Macau Open, finishing second to Hong Kong's Ng Ka Long.

[13] He continued his fine run in the BWF World Tour and reached another final at the Malaysia Super 100 in October.

However, his search for the first international badminton title was dashed by Taiwanese Chi Yu-jen after losing in the rubber set 12–21, 23–21, 15–21.

[14] In November, Teh took part in the Syed Modi India International, another BWF World Tour 300 event.

[15] However, Teh could not replicate his fine form in the final and was outclassed by India’s top seed, Lakshya Sen.