The 2026–27 Thai League 3 Western Region was part of the 2026–27 Thai League 3 Regional Stage, consisting of 12 clubs located in the western region of Thailand, along with some from the western part of the central region. The season commenced on 19 September 2026, with clubs competing in a round-robin format featuring home-and-away matches. The Regional Stage concluded on 21 March 2027, with the top two clubs advancing to the National Championship Stage, while the bottom-placed club was relegated to the Thailand Semi-pro League for the following season.
Seasonal Changes The 2026–27 Thai League 3 Western Region has been expanded to 12 clubs, up from 11 last season. BYD Auto remains the title sponsor, with matches broadcast on AIS Play. The criteria for determining the standings have also been revised, with overall goal difference replacing head-to-head results as the primary tiebreaker.
Relegation from Thai League 2 Bangkok was relegated to the 2026–27 Thai League 3 Western Region after finishing bottom of the 2025–26 Thai League 2.
Promotions from Thailand Semi-pro League Phetchaburi, later renamed Phetchaburi PBRU, was promoted from the 2026 Thailand Semi-pro League to the 2026–27 Thai League 3 Western Region as regional champions.
Relegation to Thailand Semi-pro League Nonthaburi United was relegated to the 2027 Thailand Semi-pro League after finishing bottom of the 2025–26 Thai League 3 Western Region.
Club name and logo changes Phetchaburi, newly promoted from the Thailand Semi-pro League, was renamed Phetchaburi PBRU, with "PBRU" added to the club logo to reflect the new name.
Teams Number of teams by province PositionProvinceNumberTeams14Assumption United, Bangkok, Royal Thai Army, and Thonburi United22Rajpracha and VRN Muangnont31Thap Luang United1Phetchaburi PBRU1Hua Hin City1Samut Sakhon City1Samut Songkhram City1Suphanburi
Stadiums and locations
Team Location Stadium CoordinatesWong Prachanukul Stadium72nd Anniversary Stadium, Bang MotHua Hin Municipal StadiumStadium of Phetchaburi Rajabhat UniversityNonthaburi StadiumStadium of Bangkokthonburi UniversityStadium of Thailand National Sports University, Samut Sakhon CampusSamut Songkhram StadiumSuphanburi Provincial StadiumThap Luang United Janded StadiumThonburi StadiumNonthaburi Municipal Stadium
Road travel distances between clubs
Foreign players A T3 team can register 3 foreign players from around the world. A team can field 3 foreign players in each game.
League table Standings
Positions by round
Results by round
Results
References
External links Official website of Thai League