Rock Chen Chung-nin, (; born 6 June 1966) is a Hong Kong investment manager and politician who has been a member of the Legislative Council since 2022. He is also one of the vice-chairmen of the Chinese General Chamber of Commerce and the chairman of two investment firms. He is a member of the Democratic Alliance for the Betterment and Progress of Hong Kong (DAB)

On 5 January 2022, Carrie Lam announced new warnings and restrictions against social gathering due to potential COVID-19 outbreaks. One day later, it was discovered that Chen attended a birthday party hosted by Witman Hung Wai-man, with 222 guests.Hong Kong Finds New Suspected Covid Case at Official’s Scandal-Hit Birthday Party, Bloomberg.com At least one guest tested positive with COVID-19, causing many guests to be quarantined. Additionally, Chen brought one of his staff members to the party, and the next day, the staff member visited the Legislative Council Complex and Citic Tower.

In February 2022, Chen told SCMP that he would be attending the 2022 Two Sessions, as a Hong Kong delegate.

In December 2025, Chen was re-elected as Legislative Councilor though the same constituency.

Electoral history 2021 legislative election: Election Committee No.Candidates Affiliation Votes %1 Luk Chung-hung 1,1782 Ma Fung-kwok 1,2343 Kingsley Wong Kwok 1,1924 Chan Hoi-yan 1,2925 Tang Fei 1,3396 Michael John Treloar Rowse 4547 Paul Tse Wai-chun 1,2838 Diu Sing-hung 3429 Tseng Chin-i 91910 Nelson Lam Chi-yuen 97011 Peter Douglas Koon Ho-ming 1,10212 Andrew Lam Siu-lo 1,02613 Chow Man-kong 1,06014 Doreen Kong Yuk-foon 1,03215 Fung Wai-kwong 70816 Chan Yuet-ming 1,18717 Simon Hoey Lee 1,30818 Judy Kapui Chan 1,28419 Wong Chi-him 95620 Maggie Chan Man-ki 1,33121 So Cheung-wing 1,01322 Sun Dong 1,12423 Tu Hai-ming 83424 Tan Yueheng 1,24525 Ng Kit-chong 1,23926 Chan Siu-hung 1,23927 Hong Wen 1,14228 Dennis Lam Shun-chiu 1,15729 Rock Chen Chung-nin 1,29730 Yung Hoi-yan /CF1,31331 Chan Pui-leung 1,20532 Lau Chi-pang 1,21433 Carmen Kan Wai-mun 1,29134 Nixie Lam Lam 1,18135 Luk Hon-man 1,05936 Elizabeth Quat 1,32237 Lilian Kwok Ling-lai 1,12238 Lai Tung-kwok 1,23739 Leung Mei-fun /KWND1,34840 Ho Kwan-yiu 1,26341 Chan Hoi-wing 94142 Alice Mak Mei-kuen 1,32643 Kevin Sun Wei-yung 89144 Stephen Wong Yuen-shan 1,30545 Lee Chun-keung 1,06046 Cheung Kwok-kwan 1,34247 Kenneth Leung Yuk-wai 1,16048 Allan Zeman 95549 Lam Chun-sing 1,00250 Charles Ng Wang-wai 95851 Choy Wing-keung 818

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