| Vithoon Kijmongkolsak | |
| Fullname: | Vithoon Kijmongkolsak |
| Birth Date: | 21 June 1962 |
| Birth Place: | Nakhon Sawan, Thailand |
| Height: | 1.80 m |
| Youthyears1: | 1981–1985 |
| Youthclubs1: | Nakhon Sawan |
| Years1: | 1984 |
| Years2: | 1985 |
| Years3: | 1985–1986 |
| Years4: | 1986–1990 |
| Years5: | 1991–199? |
| Clubs1: | Taworn Farm |
| Clubs2: | → Raj Pracha (loan) |
| Clubs3: | Police United |
| Clubs4: | Pahang FA |
| Clubs5: | Penang FA |
| Nationalyears1: | 1985–1995 |
| Nationalteam1: | Thailand |
| Nationalcaps1: | 84 |
| Nationalgoals1: | 29 |
| Manageryears1: | 2010 |
| Manageryears2: | 2011 |
| Managerclubs1: | Chanthaburi |
| Managerclubs2: | Thailand U23 (assistant) |
| Pcupdate: | 11 August 2011 |
Vithoon Kijmongkolsak (Thai: วิฑูรย์ กิจมงคลศักดิ์, born 21 June 1962, in Nakhon Sawan) is a Thai retired footballer and former Thailand national team captain. He played for the national team from 1985 to 1995.