The 2025–26 Thai League 3 Western Region was part of the 2025–26 Thai League 3 Regional Stage, consisting of 11 clubs located in the western region of Thailand, along with some from the western part of the central region. The season commenced on 13 September 2025, with clubs competing in a round-robin format featuring home-and-away matches. The Regional Stage concluded on 22 March 2026, 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 2025–26 Thai League 3 season features a number of changes compared to the previous campaign. These include the promotion and relegation of clubs between divisions, several club renamings and rebrandings, and the introduction of a new title sponsor, BYD Auto, which rebranded the competition as the BYD Dolphin League III for sponsorship reasons.
Relegation from Thai League 2 Originally, three clubs were scheduled to be relegated from the 2024–25 Thai League 2 to the Thai League 3. However, during the 2024–25 season, Samut Prakan City withdrew and dissolved, leading to the annulment of all their league results. As a result, only two clubs were set to be relegated.
At the end of the season, Lampang, who had secured survival in Thai League 2, failed to obtain a license to participate in the 2025–26 season and was therefore demoted to the amateur level. Their place in Thai League 2 was retained by Pattaya United, who had originally been among the relegated clubs. Consequently, only one club was relegated to Thai League 3: Suphanburi, who finished bottom of the Thai League 2 standings. Suphanburi have been placed in the Western region of Thai League 3, in line with the location of their home ground in Western Thailand.
Promotions from Thailand Semi-pro League Normally, the champions of each of the six regional groups of the 2025 Thailand Semi-pro League would be promoted to the Thai League 3. However, in the Western region, the champions, The Wall, failed club licensing and were denied promotion.
Club relegated due to club licensing failures In addition to the regular relegations, one club was demoted from the Thai League 3 Western region after failing to obtain a club licensing certificate for the 2025–26 season. Maraleina – failed licensing and were relegated to the lower divisions.
Club relegated due to finishing last in the region Alongside the licensing-related relegations, one club was demoted from the Thai League 3 Western region after finishing at the bottom of the respective regional leagues in the 2024–25 season. Kanchanaburi City – finished last in the Western region and were relegated.
Sponsorship and Broadcasting In the 2025–26 season, Thai League 3 will operate under a title sponsorship arrangement for the first time: BYD Auto (through BYD Rêver Thailand) has become the main sponsor for all three professional tiers in Thailand, including Thai League 3, rebranding it as the BYD Dolphin League III.
On the broadcasting side, a landmark media rights deal was struck, giving AIS Play (in partnership with Gulf and JAS) exclusive rights to stream all matches from Thai Leagues 1, 2, and 3, plus domestic cups and youth competitions for the 2025–26 through 2028–29 seasons. Under this agreement, Thai League 3 matches can be watched live for free via AIS Play, and fans will no longer rely solely on individual clubs' streaming efforts (e.g., via YouTube or Facebook), as they did in previous seasons.
Club logo changes 2 clubs have changed their logos for the 2025–26 season of the Thai League 3 Western region: Samut Sakhon City, updated their crest ahead of the 2025–26 season. The previous circular logo, which featured a photographic tiger head within a blue border, was replaced with a shield-shaped design that retains the tiger motif but incorporates additional maritime elements, including an anchor and a ship's wheel, along with the inscription Since 2022. Samut Songkhram City, updated their crest ahead of the 2025–26 season. The previous version featured a red shield with a stylized stingray motif and the inscriptions "SSC 2021". The revised crest retained the red shield and stingray motif but adopted a more dimensional appearance and replaced the inscriptions with "Samut Songkhram City".
Teams Number of teams by province
PositionProvinceNumberTeams13Assumption United, Royal Thai Army, and Thonburi United3Nonthaburi United, Rajpracha, and VRN Muangnont31Thap Luang United1Hua Hin City1Samut Sakhon City1Samut Songkhram City1Suphanburi
Stadiums and locations
Team Location Stadium CoordinatesWong Prachanukul StadiumHua Hin Town Municipality StadiumNonthaburi StadiumNonthaburi StadiumStadium of Bangkokthonburi UniversityStadium of Thailand National Sports University, Samut Sakhon CampusSamut Songkhram StadiumStadium of Rajamangala University of Technology Suvarnabhumi, Suphanburi CampusThap Luang United Janded StadiumThonburi StadiumNonthaburi City Municipality Stadium
Road travel distances between clubs The distances between football clubs in the 2025–26 Thai League 3 Western Region are approximate and calculated using the shortest practical and most accessible road routes. These measurements favour travel paths that balance proximity with convenience, avoiding indirect or impractical alternatives despite marginal differences in distance. By focusing on realistic road networks across western Thailand, the chart reflects the actual journeys clubs will undertake for away fixtures and provides essential insight into the logistical demands faced throughout the season.
Among the calculated distances, the shortest is 0 kilometres, representing Nonthaburi United and Rajpracha, who share the same home stadium and therefore require no travel between them. In contrast, the longest road journey spans 292 kilometres, marking the trip between Hua Hin City and Suphanburi. Regarding cumulative travel distance across the season, Hua Hin City records the highest total at approximately 1,949 kilometres, reflecting the significant travel burden it faces. Meanwhile, Royal Thai Army registers the lowest total travel distance at around 562 kilometres. These disparities are outlined in the accompanying table, providing a detailed breakdown of inter-club road distances and illustrating the varied logistical challenges within the 2025–26 campaign.
FromTo (km)TotalASUHHCNONRCAARMSKNSKMSPBTLUTBUVMNAssumption United—18525256306413151640563Hua Hin City185—2062061901651272921781832171,949Nonthaburi United25206—0254985116543017607Rajpracha252060—254985116543017607Royal Thai Army61902525—316613044936562Samut Sakhon City30165494931—42156652862677Samut Songkhram City6412785856642—1927261100894Suphanburi131292116116130156192—1181371231,511Thap Luang United511785454446572118—5066752Thonburi United618330309286113750—43577VRN Muangnont40217171736621001236643—721
Foreign players A T3 team could register 3 foreign players from foreign players all around the world. A team can use 3 foreign players on the field in each game. Note :: players who released during second leg transfer window;: players who registered during second leg transfer window. {|class="unsortable" |- | style="width:15px; background:#FFF2A8;"| ||AFC member countries players. |- | style="width:15px; background:#E3FFD0;"| ||CAF member countries players. |- | style="width:15px; background:#FFE0C6;"| ||CONCACAF member countries players. |- | style="width:15px; background:#D4E6FF;"| ||CONMEBOL member countries players. |- | style="width:15px; background:#CFFFEF;"| ||OFC member countries players. |- | style="width:15px; background:#F0E2FF;"| ||UEFA member countries players. |- | style="width:15px; background:#c8ccd1;"| ||No foreign player registered.
ClubLegPlayer 1Player 2Player 3Assumption United1st2ndHua Hin City1st2ndNonthaburi United1st2ndRajpracha1st2ndRoyal Thai Army1st2ndSamut Sakhon City1st2ndSamut Songkhram City1st2ndSuphanburi1st2ndThap Luang United1st2ndThonburi United1st2ndVRN Muangnont1st2nd
League table Standings
Positions by round
Results by round
Results
References
External links Official website of Thai League