2018 Thai League 3 Upper Region
2018 Thai League 3 Upper Region is the 2nd season of the Thai football league. It is a part of the Thai League 3 and the feeder league for the Thai League 2. A total of 14 teams will compete in the league this season, after Amnat United and Phayao withdrew before the season started.
Changes from Last Season
Team changes
Promoted Clubs
Three clubs were promoted from the 2017 Thai League 4Two clubs were promoted to the 2018 Thai League 2
- Khonkaen
- Udon Thani
Relegated Clubs
A club was relegated from the 2017 Thai League 2
- Bangkok
Withdrawn Clubs
- Amnat United and Phayao were taking a 2-years break. This team is automatically banned 2 years, don't get subsidy and relegated to 2020 Thai League 4 Northern Region for Phayao, 2020 Thai League 4 North Eastern Region for Amnat United.
Teams
Stadium and locations
| Team | Location | Stadium | Capacity |
| Ayutthaya | Ayutthaya | Udhomseelwitthaya School Stadium | 1,800 |
| Ayutthaya United | Ayutthaya | Ayutthaya Provincial Stadium | 6,000 |
| Bangkok | Bangkok | Bangkokthonburi University Stadium | 8,000 |
| Chachoengsao Hi-Tek | Chachoengsao | Chachoengsao Municipality Stadium | 6,000 |
| Chiangrai City | Chiang Rai | Singha Stadium | 11,354 |
| JL Chiangmai United | Chiang Mai | 700th Anniversary Stadium | 25,000 |
| Kalasin | Kalasin | Kalasin Municipality Stadium | 2,580 |
| Kamphaengphet | Kamphaengphet | Cha Kung Rao Stadium | 2,600 |
| Lamphun Warrior | Lamphun | Mae-Guang Stadium | 3,000 |
| Marines Eureka | Rayong | Klaeng Municipality Stadium | |
| Muangkan United | Kanchanaburi | Kleeb Bua Stadium | 13,000 |
| Phrae United | Phrae | Thunghong Municipality Stadium | 4,500 |
| Sakaeo | Sakaeo | Sakaeo PAO. Stadium | 10,000 |
| Ubon Ratchathani | Ubon Ratchathani | Ubon Ratchathani University Stadium | 2,000 |
Foreign players
A T3 team could registered five foreign players by at least one player from AFC member countries and at least one player from ASEAN member countries. A team can use four foreign players on the field in each game, including at least one player from the AFC member countries or ASEAN member countries.League table
Positions by round
Results by round
Results
Season statistics
Top scorers
| Rank | Player | Club | Goals |
| 1 |  Chatchai Narkwijit | JL Chiangmai United | 20 |
| 2 |  Nascimento Dos Santos | Ayutthaya United | 15 |
| 3 | Jaruwat Narmmool | Phuket City, Lamphun Warrior | 12 |
| 3 | Saran Sridet | Lamphun Warrior | 12 |
| 5 |  Kendall Jagdeosingh | Sakaeo, Ayutthaya | 10 |
| 5 |  Taku Ito | JL Chiangmai United | 10 |
| 5 |  Anggello Machuca | JL Chiangmai United | 10 |
| 8 |  Kang Min-gu | Chiangrai City | 8 |
| 8 | Pakkaphon Kanlapakdee | Marines Eureka | 8 |
| 10 | Poramet Arjvirai | Bangkok | 7 |
| 10 |  Jimmy Shola | Kamphaengphet | 7 |
| 10 |  Lionel Frank | Marines Eureka | 7 |
| 10 | Jhonatan Bernardo | Phrae United | 7 |
| 10 | Tuangsit Soimee | Sakaeo | 7 |
| 10 | Bouba Abbo | Trang, Ubon Ratchathani | 7 |