| Club: | SCG Muangthong United |
| Season: | 2019 |
| Manager: |  Pairoj Borwonwatanadilok(until 31 March 2019) Uthai Boonmoh(caretaker)  Yoon Jong-hwan(8 April 2019 - 12 June 2019)  Alexandre Gama |
| Chairman: | Wilak Lohtong |
| Owner: | Surya Paloh |
| Stadium: | SCG Stadium, Pak Kret, Nonthaburi, Thailand |
| League: | Thai League T1 |
| Cup1: | Thai FA Cup |
| Cup2: | Thai League Cup |
| Pattern B1: | _redstripes |
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| Pattern Sh2: | _white stripes |
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| Pattern La3: | _blackborder |
| Pattern B3: | _Muangthong17t |
| Pattern Ra3: | _blackborder |
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| Prevseason: | 2018 |
The 2019 season is SCG Muangthong United Football Club's 13th existence in the new era since they took over from Nongchok Pittaya Nusorn Football Club in 2007. It is the third season in the Thai League and the club's 11th consecutive season in the top flight of the Thai football league system since promoted in the 2009 season.
| Position | Player | Transferred From | Ref |
|---|---|---|---|
| Hải Phòng F.C. | Free [1] | ||
| Pattaya United F.C. | Season loan [2] | ||
| Al-Wasl F.C. | Season loan [3] | ||
| Bangkok Glass FC | [4] [5] | ||
 Yadanarbon F.C. | Season loan [6] | ||
| Position | Player | Transferred To | Ref |
|---|---|---|---|
| Chonburi F.C. | Season loan | ||
| Bangkok F.C. | Season loan | ||
| Trat F.C. | Free [7] | ||
| Bangkok United | THB25m [8] | ||
| Bangkok United | THB16m [9] | ||
 Gamba Osaka | Free [10] | ||
| Udon Thani F.C. | Season loan | ||
| Udon Thani F.C. | Season loan | ||
| Yokohama F. Marinos | Season loan [11] | ||
| Bangkok F.C. | Season loan | ||
| Simork F.C. | Season loan | ||
| Army United F.C. | Season loan | ||
| Sisaket F.C. | Season loan | ||
| Udon Thani F.C. | |||
| Trat F.C. | Season loan | ||
| Police Tero F.C. | Season loan | ||
| Hokkaido Consadole Sapporo | Euro2.4m [12] | ||
| Trat F.C. | Season loan | ||
| Free | |||
| Suphanburi F.C. | End of Contract | ||
Note 1: Pitakpong Kulasuwan returned to the team after the loan but transferred to the same team for loan in 2019.
| Position | Player | Transferred From | Ref |
|---|---|---|---|
| Bangkok F.C. | Loan Return | ||
| PT Prachuap F.C. | Loan Return | ||
| Udon Thani F.C. | Loan Return | ||
| Udon Thani F.C. | Loan Return | ||
| Vissel Kobe | Loan Return [13] | ||
| Bangkok F.C. | Loan Return | ||
| Bangkok F.C. | Loan Return | ||
| Udon Thani F.C. | Loan Return | ||
| Udon Thani F.C. | Loan Return | ||
| Army United F.C. | Loan Return | ||
| Sisaket F.C. | Loan Return | ||
| Udon Thani F.C. | Loan Return | ||
| Sanfrecce Hiroshima | Loan Return | ||
| Position | Player | Transferred From | Ref |
|---|---|---|---|
| Sepsi OSK Sfântu Gheorghe | Free [14] | ||
| C.D. Aves | Free [15] | ||
| G.D. Chaves | |||
| Port F.C. | |||
| Chainat Hornbill F.C. | |||
| Position | Player | Transferred To | Ref |
|---|---|---|---|
| Samut Prakan City F.C. | Season loan | ||
| PT Prachuap F.C. | Season loan | ||
| Trat F.C. | Season loan | ||
| Police Tero F.C. | |||
| Chonburi F.C. | |||
| Ayutthaya United F.C. | Season loan | ||
| PT Prachuap F.C. | |||
| Port F.C. | |||
| Position | Player | Transferred From | Ref |
|---|---|---|---|
| Chonburi F.C. | Loan Return | ||
| Police Tero F.C. | Loan Return | ||
| Chonburi F.C. | Loan Return | ||
| Army United F.C. | Loan Return | ||
| Port F.C. | Loan Return | ||
See main article: 2019 Thai League 1.
See main article: 2019 Thai FA Cup.
See main article: 2019 Thai League Cup.
