| Chapchai Nirat | |
| Birth Date: | 5 June 1983 |
| Birth Place: | Bangkok, Thailand |
| Residence: | Bangkok, Thailand |
| Yearpro: | 1998 |
| Tour: | Asian Tour All Thailand Golf Tour |
| Extour: | European Tour |
| Prowins: | 11 |
| Eurowins: | 1 |
| Asiawins: | 4 |
| Otherwins: | 7 |
Chapchai Nirat (Thai: ชัพชัย นิราช; born 5 June 1983) is a Thai professional golfer.
Chapchai is the son of a Thai national team golfer, and turned professional in 1998 as a fifteen-year-old. He won for the first time as a pro at the 2004 Genting Masters in Malaysia. He joined the Asian Tour in 2005, and had a second-place finish in his rookie season. In 2007 he won the TCL Classic, which is co-sanctioned by the Asian Tour and the European Tour and the Hana Bank Vietnam Masters. He was the third Thai to win a European Tour event.
In March 2009, Nirat shot 32-under-par over 72 holes to claim the SAIL Open, setting a new Asian Tour record for the best 72-hole score.[1]
| No. | Date | Tournament | Winning score | Margin of victory | Runner(s)-up | |
|---|---|---|---|---|---|---|
| 1 | 18 Mar 2007 | TCL Classic1 | −22 (61-66-68-71=266) | 3 strokes |  Rafael Echenique | |
| 2 | 25 Nov 2007 | Hana Bank Vietnam Masters | −12 (68-71-70-67=276) | 2 strokes | Simon Griffiths,  Chawalit Plaphol | |
| 3 | 21 Mar 2009 | SAIL Open | −32 (62-62-65-67=256) | 11 strokes |  Gaganjeet Bhullar,  Richard Moir | |
| 4 | 21 Sep 2014 | Worldwide Holdings Selangor Masters | −10 (68-69-69-68=274) | Playoff |  Antonio Lascuña |
Asian Tour playoff record (1–1)
| No. | Year | Tournament | Opponent | Result | |
|---|---|---|---|---|---|
| 1 | 2014 | Worldwide Holdings Selangor Masters | Antonio Lascuña | Won with par on first extra hole | |
| 2 | 2015 | CIMB Niaga Indonesian Masters | Lee Westwood | Lost to birdie on first extra hole |
| No. | Date | Tournament | Winning score | Margin of victory | Runner-up | |
|---|---|---|---|---|---|---|
| 1 | 7 Apr 2007 | Singha Pattaya Open | ||||
| 2 | 25 May 2014 | Singha Championship | −14 (69-67-71-67=274) | 2 strokes | Thitiphun Chuayprakong | |
| 3 | 3 Aug 2014 | Singha Chiang Mai Open1 | −23 (65-67-65-64=261) | 2 strokes | Pipatpong Naewsuk | |
| 4 | 4 Dec 2016 | ADT Thongchai Jaidee Foundation2 | −12 (73-71-67-65=276) | 6 strokes | Sorachut Hansapiban |
| Tournament | 2008 | 2009 | |
|---|---|---|---|
| Match Play | |||
| Championship | T61 | ||
| Invitational | |||
| Champions | T33 |