Chong Won-o (; born 12 August 1968) is a South Korean politician. He is a member of the Democratic Party.

Chong ran to be Mayor of Seoul in the 2026 local elections, but narrowly lost to People Power Party opponent and incumbent mayor Oh Se-hoon.

Education B.A. in Economics, College of Economics, University of Seoul M.A. in Social Welfare, Graduate School of Public Policy, Hanyang University Completed doctoral coursework in Urban Development and Management, Graduate School of Urban Studies, Hanyang University

Election results Local elections Mayor of Seoul Year Elections Constituency Political party Votes (%) Remarks 2026 9th Iocal Election Seoul(Mayoral Elections) Democratic 2,515,560 (48.07%) Defeated

Mayor Of Seongdong Year Elections Constituency Political party Votes (%) Results 2014 6th Iocal Election Mayor of Seongdong NPAD 72,188 (50.02%) Won 2018 7th Iocal Election Mayor of Seongdong Democratic 107,970 (69.46%) Won 2022 8th Iocal Election Mayor of Seongdong Democratic 79,786 (57.60%) Won

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