Dr. Ko Chung Sen (; born 1968) is a Malaysian surgeon and politician of Chinese descent.^[1] He was the Perak State Legislative Assemblyman for Kepayang from 2018 to 2022. He is a member of the Democratic Action Party (DAP), a component in the Pakatan Harapan (PH) coalition. A surgeon by profession, he received BAO cum laude from Trinity College in Dublin. He became a fellow of the Royal College of Surgeons in Ireland in 1999.

Ko returned to Malaysia to work as a Consultant Cardiothoracic Surgeon in Penang General Hospital in 2001 and worked there until 2004. He then moved to Ipoh to work in KPJ Specialist Hospital and has been there since then.^[2]

He was elected to the parliament for Kampar constituency in the 2013 election. As candidate of the DAP, he defeated Malaysian Chinese Association (MCA) incumbent Lee Chee Leong.^[3] In the 2018 election, was picked as candidate for Perak state seat of Kepayang which he had won and got to be its state assemblyman.

Election results

Year!
Constituency	Candidate		Votes	Pct	Opponent(s)		Votes	Pct	Ballots cast	Majority	Turnout
2013	P070 Kampar, Perak			(DAP)	26,863	55.59%			Lee Chee Leong (MCA)	21,463	44.41%	49,265	5,400	77.44%

Year!
Constituency	Candidate		Votes	Pct	Opponent(s)		Votes	Pct	Ballots cast	Majority	Turnout
2018	N29 Kepayang			(DAP)	12,417	80.95%			Chang Kok Aun (MCA)	2,922	19.05%	15,560	9,495	74.60%

Notes and References

Web site: MyMP Ko Chung Sen . MyMP . 2016-03-01 .
Web site: Search Doctor . KPJ Ipoh Specialist Hospital . 2016-03-01 . dead . https://web.archive.org/web/20160312214652/http://www.kpjipoh.com/search.php . 2016-03-12 .
Web site: For my kids' future . Tan . T.K. . The Rocket . 2014-06-03 . 2016-03-01 .