Detective Chinatown (Chinese: 唐人街探案; pinyin: Tángrénjiē Tàn Àn) is a Chinese mystery crime drama web television series. It is executively produced by Chen Sicheng, with the first season having an ensemble cast including Roy Chiu, Janine Chang, Zhang Yishang, Chen Zheyuan and Yuxian Shang, Haoming Yu and Kenny Bee joining in season two.

The web series serves as a spin-off from the acclaimed Detective Chinatown film franchise, featuring detectives Tang Ren (Wang Baoqiang) and Qin Feng (Liu Haoran). However, it goes beyond by introducing new detectives and delving deeper into the intricate mysteries and cases within the Detective Chinatown universe.

The web series was designed to be a part of the expanding Detective Chinatown universe storyline with events of the web series beginning in the aftermath of the first film, Detective Chinatown, and running concurrently with those of Detective Chinatown 2 and Detective Chinatown 3.

Premiering in January, 2020 and then in February, 2024, both seasons were made available exclusively on the subscription video on-demand over-the-top streaming service iQIYI with the initial episodes made free to watch and then subsequent episodes available for VIP members.