Chong Chieng Jen (; Pha̍k-fa-sṳ: Chông Khien-ìn, born 12 February 1971), is a Malaysian politician and lawyer who served as the Deputy Minister of Domestic Trade and Consumer Affairs in the Pakatan Harapan (PH) administration under former Prime Minister Mahathir Mohamad and former Minister Saifuddin Nasution Ismail from July 2018 to the collapse of the PH administration in February 2020. He has served as the Member of Parliament (MP) for Stampin since May 2018, Bandar Kuching from March 2004 to May 2018 and Member of the Sarawak State Legislative Assembly (MLA) for Padungan since December 2021 and Kota Sentosa from May 2006 to December 2021. He served as Leader of the Opposition of Sarawak from June 2013 to November 2020. He is a member, National Vice-Chairman, State Chairman of Sarawak, Branch Chairman of Kuching and Youth Advisor of Sarawak as well as Kuching of the Democratic Action Party (DAP), a component party of the PH opposition coalition. Personal life and education Chong started his primary education in SJK(C) Methodist (Methodist Chinese National Primary School), Sibu. He continued his Primary 3 to 5 education at Kuching's SJK(C) Chung Hua No. 3 (Chung Hua No. 3 Chinese National Primary School), and Primary 6 at SRK St. Theresa Padungan (St. Theresa Padungan National Primary School), Kuching. Chong later undertook his secondary education in SMK St. Joseph, Kuching (St. Joseph, Kuching National Secondary School) and Saint Patrick's School, Singapore. He was admitted into Victoria Junior College, one of the top junior colleges in Singapore. Chong pursued his tertiary studies at the Australian National University, Canberra and graduated with a Bachelor of Commerce, majoring in accounting & economics, and Bachelor of Laws. Legal career He works as an advocate in Kuching and is attached to the legal firm Messrs Chong Brothers Advocates. Political career Chong first took part in the 10th Malaysian general election, contesting for the Bandar Kuching parliamentary seat as a DAP candidate but lost to Sarawak United People's Party (SUPP) candidate, Song Swee Guan. In the following 10th Sarawak state election, he contested for the Padungan state seat, eventually losing out to Lily Yong Lee Lee, also a SUPP candidate. In the 11th Malaysian general election, Chong was elected as MP for Bandar Kuching with a 2,041 majority vote, and later, Sarawak state assemblyman for the newly created seat of Kota Sentosa in following the results of the 11th Sarawak state election.