Chew Seh Yong

{{short description|Malaysian politician}}

{{use dmy dates|date=May 2023}}

{{Infobox officeholder

| honorific-prefix = Yang Berhormat Tuan

| name = Chew Seh Yong

| native_name = {{nobold|周世扬}}

| native_name_lang = zh-my

| honorific-suffix = MLA

| occupation = Politician

| office1 = Member of the
Negeri Sembilan State Executive Council
{{small|(Human Resources, Plantations and Non-Islamic Affairs)}}

| term_start1 = 10 February 2023

| term_end1 = 14 August 2023

| monarch1 = Muhriz

| 1blankname1 = Menteri Besar

| 1namedata1 = Aminuddin Harun

| predecessor1 = Arul Kumar Jambunathan

| successor1 = Jalaluddin Alias
{{small|(Senior Member, Plantations)}}
Veerapan Superamaniam
{{small|(Human Resources)}}
Teo Kok Seong
{{small|(Non-Islamic Affairs)}}

| constituency1 = Lobak

| constituency_AM2 = Lobak

| assembly2 = Negeri Sembilan State Legislative

| term_end2 =

| term_start2 = 9 May 2018

| predecessor2 = Siow Kim Leong
(PR–DAP)

| successor2 =

| majority2 = 11,782 (2018)
13,504 (2023)

| constituency_AM3 = Bahau

| assembly3 = Negeri Sembilan State Legislative

| term_start3 = 5 May 2013

| term_end3 = 9 May 2018

| predecessor3 = Teo Kok Seong
(PR–DAP)

| successor3 = Teo Kok Seong
(PH–DAP)

| majority3 = 5,136 (2013)

| birth_name = Chew Seh Yong

| birth_date = {{birth date and age|1962|2|3|df=y}}

| birth_place = Malaysia

| party = Democratic Action Party (DAP)

| otherparty = Pakatan Rakyat (PR)
{{small|(2008–2015)}}
Pakatan Harapan (PH)
{{small|(since 2015)}}

}}

Chew Seh Yong (born 3 February 1962) is a Malaysian politician who has served as Member of the Negeri Sembilan State Legislative Assembly (MLA) for Lobak since May 2018. He served as Member of the Negeri Sembilan State Executive Council (EXCO) in the Pakatan Harapan (PH) state administration under Menteri Besar Aminuddin Harun from February to August 2023 and MLA for Bahau from May 2013 to May 2018.{{cite web|url=https://www.ns.gov.my/en/exco-dan-dun|title=Exco dan DUN|website=www.ns.gov.my}} He is a member of the Democratic Action Party (DAP), a component party of the PH and formerly Pakatan Rakyat (PR) coalition. He is also the shortest-serving Negeri Sembilan EXCO Member in the recent history of the state, in office for slightly more than just 6 months.