Thongchai Yenprasert (; 20 February 1955 – 10 August 2026) was a Thai politician who served as the president of the Nonthaburi Provincial Administrative Organization in 2004 until his assassination.
Early life and career Thongchai Yenprasert was born on 20 February 1955 in Tha It, Pak Kret District, Nonthaburi Province. He completed his education at Ramkhamhaeng University and earned a Bachelor of Laws degree. He was a member of the 9th Special Police Cadet Class.
He began his political career with a multi-decade tenure in law enforcement before joining the Royal Thai Police in 1984. He served as the Police Legal Division from 1984 to 1988 before joining the elite Crime Suppression Division, where he served from 1988 to 1997. He then served as the Deputy Superintendent of Sai Noi Police Station from 1997 to 1998, Deputy Superintendent of Mueang Nonthaburi Police Station from 1998 to 2000, Superintendent of Bang Bua Thong Police Station from 2000 to 2001, and Superintendent of Pak Kret Police Station from 2001 to 2004. Thongchai then started his government career and was elected in 2004 as the president of the Nonthaburi Provincial Administrative Organization. He then won many re-elections, serving a total of five consecutive terms over more than two decades.
Death On 10 August 2026, Thongchai was fatally shot during an incident at the Nonthaburi Provincial Administrative Organization office on 11:00 AM local time, former Member of Parliament for Nonthaburi Chalong Riewrang approached Thongchai's vehicle and fired multiple gunshots, hitting the face, forehead, chin, and neck. He was rushed to Phra Nang Klao Hospital, where he was pronounced dead at 2:36 PM. Chalong surrendered to law enforcement at the scene, and preliminary police investigations indicated the shooting stemmed from a personal and financial dispute between the two figures.
Royal decorations 2011 – Knight Grand Cross (First Class) of the Most Noble Order of the Crown of Thailandราชกิจจานุเบกษา, ประกาศสำนักนายกรัฐมนตรี เรื่อง พระราชทานเครื่องราชอิสริยาภรณ์อันเป็นที่เชิดชูยิ่งช้างเผือกและเครื่องราชอิสริยาภรณ์อันมีเกียรติยศยิ่งมงกุฎไทย ประจําปี ๒๕๕๔, เล่ม ๑๒๘ ตอนที่ ๒๔ ข หน้า ๑๑๐, ๒ ธันวาคม ๒๕๕๔ 2009 – Knight Commander (Second Class) of the Most Exalted Order of the White Elephantราชกิจจานุเบกษา, ประกาศสำนักนายกรัฐมนตรี เรื่อง พระราชทานเครื่องราชอิสริยาภรณ์อันเป็นที่เชิดชูยิ่งช้างเผือกและเครื่องราชอิสริยาภรณ์อันมีเกียรติยศยิ่งมงกุฎไทย ชั้นต่ำกว่าสายสะพาย ประจำปี ๒๕๕๒, เล่ม ๑๒๗ ตอนที่ ๖ ข หน้า ๒, ๖ มิถุนายน ๒๕๕๓
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