John Chan Cho Chak, GBS, CBE, LVO, JP (born 8 April 1943) is a Hong Kong civil servant and executive.

He was a long-time civil servant and one of the most senior Chinese officials in the Hong Kong Government under British rule.

[1] He has been awarded the degrees of Doctor of Business Administration honoris causa by the International Management Centres in 1997 and Doctor of Social Sciences honoris causa by the Hong Kong University of Science and Technology in 2009 and the University of Hong Kong in March 2011.

In the private sector, Chan also held a number of important positions including: Executive Director and General Manager of Sun Hung Kai Finance Company Limited (1978-1980), managing director of The Kowloon Motor Bus Company (1933) Limited (1993-2006) and managing director of Transport International Holdings Limited (1997-2008).

Chan currently serves as Chairman of the Council of the Sir Edward Youde Memorial Fund, Chairman of the Court of The Hong Kong University of Science and Technology and a member of the Exchange Fund Advisory Committee.