Rangsan Viwatchaichok

Rangsan Viwatchaichok (; ), born 22 January 1979) is a Thai professional football manager and former professional footballer who is currently the head coach of Thai League 1 club Chonburi.

Rangsan currently holds the record for the most all-time appearances in Thai League 1, with 440 appearances. He is known for his set pieces freekick back in his playing career.

International career Rangsan has played 29 games for the senior Thailand national team since 2004, and he has scored one goal in the process.

Managerial career

BEC Tero Sasana On 11 July 2013, BEC Tero Sasana sacked René Desaeyere and promoted Choketawee Promrut to be the club interim manager. Rangsan, who was the club captain, was also promoted to be the assistant coach.

On 9 August 2015, Rangsan was promoted to be the interim manager of BEC Tero Sasana after the removal of Kenny Shiels.

He had coached the club for three games before the appointment of Manuel Cajuda on 27 August.

On 1 December 2015, he was promoted to be the interim manager again after the resignation of Manuel Cajuda. Rangsan managed the club in the last three games of 2015 season with the record of 2 wins and 1 loss. The club set to relegate to Division 1 according to the final standing but still remained in top league after the withdraw of Saraburi from the competition.

Suphanburi On 17 April 2017, Rangsan was appointed as assistant manager of Suphanburi under manager Adebayo Gbadebo.

Police Tero

On 23 April 2018, FOX Sports Asia reported in an article that Rangsan was appointed head coach of Police Tero following the departure of Englishman Scott Cooper. On 29 June, he was demoted to assistant under Totchawan Sripan before getting promoted to manager again on 14 September the same year.

Port After 5 years at Police Tero, Rangsan was appointed to replace Surapong Kongthep as the manager of Thai League 1 club Port on 8 November 2023.

Muangthong United On 28 May 2025, Rangsan was appointed manager of Thai League 1 club Muangthong United replacing Gino Lettieri.

Chonburi On 13 November 2025, Rangsan was appointed manager of Thai League 1 club Chonburi replacing Teerasak Po-on.

International goals

+ List of international goals scored by Rangsan Viwatchaichok No. Date Venue Opponent Score Result Competition1 18 July 2009 Nonthaburi, Thailand 2–0 4–0 Friendly

Managerial statistics

Honours Player BEC Tero Sasana Thai Premier League: 2000 Thai League Cup: 2014

Krung Thai Bank Thai Premier League: 2002–03, 2003–04

Buriram United Thai Premier League: 2008, 2011 Thai FA Cup: 2011 Thai League Cup: 2011

Manager Police Tero Thai League 2 runner-up: 2019

Individual Thai League 1 Coach of the Month: October 2022, December 2023