2024–25 Thai League 1

The 2024–25 Thai League 1 will be the 28th season of the Thai League 1, the top Thai professional league for association football clubs, since its establishment in 1996, also known as Hilux Revo Thai League due to the sponsorship deal with Toyota Motor Thailand. A total of 16 teams will compete in the league.

The summer transfer window period is opened from 25 May to 9 August 2024 while the winter transfer window period will be opened from 19 December 2024 to 17 January 2025.

Buriram United are the defending champions, while Nakhon Ratchasima, Nongbua Pitchaya, and Rayong have entered as the promoted teams from the 2023–24 Thai League 2.

Promoted clubs
Promoted from the 2023–24 Thai League 2
 * Nakhon Ratchasima
 * Nongbua Pitchaya
 * Rayong

Relegated clubs
Relegated from the 2023–24 Thai League 1
 * Chonburi
 * Police Tero
 * Trat

Teams
There are 16 clubs in the league, with three promoted teams from Thai League 2 replacing the three teams that were relegated from the 2023-24 season.

Chonburi, Police Tero and Trat were relegated at the end of the 2023–24 season after finishing in the bottom three places of the table. Trat made their immediate return to the second-tier, Police Tero ended a 4-year stint in the top-flight, while Chonburi ended an 19-year tenure in the top-flight. The three were replaced by 2023-24 Thai League 2 champions Nakhon Ratchasima F.C., who are returning to the top-flight after a single year away. They were joined by runners-up Nongbua Pitchaya, who are also returning to the top-flight after a single year away and were promoted for the second time in their history to the top-flight and Rayong, the promotion playoff winner which was first held in 2020–21 season, who are returning to the top-flight after 3-years away and like Nongbua Pitchaya they also were promoted for the second time in their history to the top-flight.

Stadium and locations

 * Note: Table lists in alphabetical order.

Personnel and sponsoring
Note: Flags indicate national team as has been defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

Foreign players
Each team can register a maximum of nine foreign players, including a slot from the AFC and no more than three from the AFF.

Players named in bold indicates the player was registered during the winter transfer window. Players named in italics indicates the player was de-registered or left their respective clubs during transfer window periods.

Dual citizenship/heritage players
Overseas Thai players whom have obtained a Thai passport are regarded as local players.

 Notes: 
 * Carrying Thai heritage.
 * Capped for Thailand.

Top scorers

 * As of 26 May 2024.

Clean sheets

 * As of 26 May 2024.