| Somchai Singmanee | |
| Fullname: | Somchai Singmanee |
| Birth Date: | 20 January 1986 |
| Birth Place: | Chanthaburi, Thailand |
| Currentclub: | Lamphun Warrior |
| Clubnumber: | 24 |
| Position: | Striker |
| Youthyears1: | 2005 |
| Youthclubs1: | Chanthaburi |
| Years1: | 2006–2007 |
| Caps1: | 35 |
| Goals1: | 16 |
| Years2: | 2008–2012 |
| Caps2: | 48 |
| Goals2: | 6 |
| Years3: | 2012–2013 |
| Clubs3: | TOT |
| Caps3: | 11 |
| Goals3: | 0 |
| Years4: | 2014–2015 |
| Caps4: | 16 |
| Goals4: | 0 |
| Years5: | 2015 |
| Clubs5: | Nakhon Pathom United |
| Years6: | 2015–2016 |
| Clubs6: | Ayutthaya |
| Years7: | 2016 |
| Clubs7: | Inter Pattaya |
| Years8: | 2017 |
| Clubs8: | Phrae United |
| Years9: | 2018– |
| Clubs9: | Lamphun Warrior |
| Pcupdate: | 28 June 2008 |
Somchai Singmanee (Thai: สมชาย สิงห์มณี, January 20, 1986) is a professional footballer from Thailand.