|Full name||Therdsak Chaiman|
|Date of birth||29 September 1973|
|Place of birth||Suphanburi, Thailand|
|Height||1.64 m (5 ft 4 1⁄2 in)|
|Playing position||Attacking midfielder|
|2000–2003||BEC Tero Sasana||65||(17)|
|2002||→ SAFFC (loan)||35||(26)|
|2004||Dong A Bank||28||(8)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 20 May 2012.
‡ National team caps and goals correct as of 7 December 2010
Therdsak Chaiman (Thai: เทิดศักดิ์ ใจมั่น, born September 29, 1973), simply known as Uncle Therd (Thai: น้าเทิด) is a Thai professional footballer who plays as a Midfielder for Thai League T1 club Chonburi and the manager. Therdsak is a free kick specialist and can shoot with both feet. Therdsak also once played futsal for the Thai national team.
Therdsak is regarded[by whom?] as one of Southeast Asia's finest footballers. In 2002, he was loaned out to SAFFC in 2002 and proceeded to win the S.League player of the year. In 2003, Therdsak led BEC Tero Sasana to the final of the AFC Champions League against Al Ain FC in 2003. He scored against Taejon Citizen and Shanghai Shenhua in the process and was named the 2003 AFC Champions League most valuable player. In 2004, Therdsak secured a move to Vietnam's East Asia Bank but did not settle well due to a stomach muscle injury which kept him out for seven months. He promptly rejoined his former club SAFFC in 2005 despite interest from Home United Football Club. Despite his diminutive frame, Therdsak has proved to be more than capable to play with the bigwigs of international football, and at his peak, impressing many with his surging runs, vision and shot technique not often seen among footballers of his region.
On 21 December 2015, Chonburi has promoted Therdsak from player-coach to be the new manager of the club after the departure of Jadet Meelarp. Therdsak made the official managerial debut on 2 February 2016 in AFC Champions League Preliminary Round 2 against Myanmar champion, Yangon United F.C. at Chonburi Stadium. Chonburi won 3-2 at the extra-time.Chonburi were knocked out of the AFC competition in the final playoff by losing 0-9 to F.C. Tokyo from Japan.
- As of 28 April 2017
|Chonburi||21 December 2015||Present||50||23||14||13||86||65||+21||46.00|
1 A win or loss by the penalty shoot-out is counted as the draw in time.
In 2002, Therdsak was instrumental for the Thailand national football team in the Tiger Cup which they won. He was awarded the Tiger Cup Most Valuable Player Award for his displays in the tournament. In June 2007, he was recalled into the national football team for the 2007 AFC Asian Cup after a lengthy absence from the team due to fatigue.
|1.||August 31, 1998||Ho Chi Minh City, Vietnam||Indonesia||3-2||Won||1998 Tiger Cup|
|2.||June 18, 2000||Bangkok, Thailand||Uzbekistan||2-0||Won||Friendly|
|3.||June 18, 2000||Bangkok, Thailand||Uzbekistan||2-0||Won||Friendly|
|4.||September 1, 2000||Shanghai, China||China PR||1-3||Lost||2000 Four Nations Tournament|
|5.||September 3, 2000||Shanghai, China||Uzbekistan||4-2||Won||2000 Four Nations Tournament|
|6.||October 6, 2000||Doha, Qatar||Qatar||1-1||Draw||Friendly|
|7.||January 30, 2001||Bangkok, Thailand||Kyrgyzstan||3-1||Won||Friendly|
|8.||June 13, 2001||Beirut, Lebanon||Sri Lanka||4-2||Won||2002 FIFA World Cup qualification|
|9.||June 15, 2001||Beirut, Lebanon||Pakistan||3-0||Won||2002 FIFA World Cup qualification|
|10.||December 8, 2002||Bangkok, Thailand||Vietnam||2-1||Won||Friendly|
|11.||December 8, 2002||Bangkok, Thailand||Vietnam||2-1||Won||Friendly|
|12.||December 20, 2002||Singapore||Malaysia||1-3||Lost||2002 Tiger Cup|
|13.||December 29, 2002||Jakarta, Indonesia||Indonesia||4-2 (pens)||Won||2002 Tiger Cup|
|14.||February 18, 2003||Bangkok, Thailand||Qatar||1-1||Draw||2003 King's Cup|
|15.||November 19, 2003||Bangkok, Thailand||Tajikistan||1-0||Won||2004 Asian Cup Qualification|
|16.||August 19, 2004||Bangkok, Thailand||Malaysia||1-2||Lost||Friendly|
|17.||October 8, 2004||Bangkok, Thailand||Jordan||2-3||Lost||Friendly|
|18.||October 13, 2004||Bangkok, Thailand||United Arab Emirates||3-0||Won||2006 FIFA World Cup qualification|
|19.||December 10, 2004||Kuala Lumpur, Malaysia||Myanmar||1-1||Draw||2004 Tiger Cup|
|20.||December 12, 2004||Kuala Lumpur, Malaysia||Timor-Leste||8-0||Won||2004 Tiger Cup|
|21.||November 14, 2009||Singapore||Singapore||3-1||Won||2011 AFC Asian Cup qualification|
|22.||January 20, 2010||Nakhon Ratchasima, Thailand||Poland||1-3||Lost||2010 King's Cup|
- BEC Tero Sasana
- Singapore Armed Forces
- AFC Champions League Most Valuable Player (1): 2002–03
- AFC Futsal Championship Top Scorers (1): 2000
- Tiger Cup Most Valuable Player (1): 2002
- Thai Premier League Player of the Month (1): May 2010
- Insawang, Arwatchanon (22 December 2015). "Chonburi appoints Therdsak Chaiman as head coach". Football Channel Asia. Retrieved 22 December 2015.
- Profile at Goal