| Yai Nilwong | |
| Fullname: | Yai Nilwong |
| Birth Date: | 1985 3, df=yes |
| Birth Place: | Kanchanaburi, Thailand |
| Position: | Left winger |
| Youthyears1: | 2008 |
| Youthclubs1: | Rajnavy Rayong |
| Years1: | 2009 |
| Caps1: | 17 |
| Goals1: | 6 |
| Years2: | 2010 |
| Clubs2: | Thai Port |
| Caps2: | 15 |
| Goals2: | 2 |
| Years3: | 2011 |
| Clubs3: | TTM Phichit |
| Caps3: | 23 |
| Goals3: | 7 |
| Years4: | 2012 |
| Clubs4: | Esan United |
| Caps4: | 12 |
| Goals4: | 2 |
| Years5: | 2013 |
| Caps5: | 4 |
| Goals5: | 0 |
| Years6: | 2013 |
| Clubs6: | → Bangkok United (loan) |
| Caps6: | 12 |
| Goals6: | 0 |
| Years7: | 2014–2017 |
| Clubs7: | Ratchaburi Mitr Phol |
| Caps7: | 93 |
| Goals7: | 6 |
| Years8: | 2017 |
| Clubs8: | → Sisaket (loan) |
| Caps8: | 10 |
| Goals8: | 1 |
| Years9: | 2018 |
| Caps9: | 17 |
| Goals9: | 1 |
| Years10: | 2019 |
| Caps10: | 10 |
| Goals10: | 2 |
| Years11: | 2019 |
| Caps11: | 6 |
| Goals11: | 0 |
| Years12: | 2020 |
| Caps12: | 2 |
| Goals12: | 0 |
| Years13: | 2020–2021 |
| Caps13: | 16 |
| Goals13: | 2 |
| Years14: | 2022 |
| Caps14: | 0 |
| Goals14: | 0 |
| Years15: | 2023 |
| Caps15: | 0 |
| Goals15: | 0 |
| Totalcaps: | 237 |
| Totalgoals: | 29 |
| Manageryears1: | 2021–2022 |
| Manageryears2: | 2022 |
| Managerclubs2: | MH Nakhon Si City |
| Manageryears3: | 2022–2023 |
| Managerclubs3: | Dragon Pathumwan Kanchanaburi |
| Manageryears4: | 2023– |
| Managerclubs4: | Samut Sakhon City |
| Pcupdate: | 20 May 2023 |
Yai Nilwong (Thai: ใหญ่ นิลวงศ์, born 12 March 1985) is a Thai retired[1] professional football player and football manager.[2] [3]
Yai's brother Sompob Nilwong is also a footballer and plays as a center back.[4]