| Sarif Sainui | |
| Fullname: | Sarif Sainui |
| Birth Date: | 15 April 1980 |
| Birth Place: | Krabi, Thailand |
| Position: | Striker |
| Youthyears1: | 1998–2001 |
| Youthclubs1: | Bangkok University |
| Years1: | 2002–2004 |
| Caps1: | 42 |
| Goals1: | 22 |
| Years2: | 2005–2006 |
| Clubs2: | Kelantan FA |
| Caps2: | 26 |
| Goals2: | 13 |
| Years3: | 2007–2010 |
| Caps3: | 80 |
| Goals3: | 27 |
| Years4: | 2011–2012 |
| Caps4: | 13 |
| Goals4: | 6 |
| Years5: | 2013 |
| Caps5: | 9 |
| Goals5: | 1 |
| Years6: | 2014–2015 |
| Caps6: | 27 |
| Goals6: | 5 |
| Years7: | 2015 |
| Clubs7: | Angthong |
| Caps7: | 10 |
| Goals7: | 2 |
| Totalcaps: | 207 |
| Totalgoals: | 76 |
| Nationalyears1: | 2003–2004 |
| Nationalteam1: | Thailand |
| Nationalcaps1: | 2 |
| Nationalgoals1: | 1 |
| Club-Update: | 1 June 2013 |
| Manageryears1: | 2016–2017 |
| Managerclubs1: | Angthong (assistant) |
| Manageryears2: | 2018– |
| Managerclubs2: | Bangkok United (assistant) |
Sarif Sainui (Thai: ซารีฟ สายนุ้ย, born April 15, 1980) is a Thai retired professional footballer who played as a striker and current assistant coach of Thai League 1 club Bangkok United.
Sarif played for the Thailand national team. He played 2 games and scored one goals