A total of 14 teams participated in the V.League 1 2025–26 season.
Format changes Starting from this season, there will be 2 relegation spots and the relegation play-off game has been removed. However, on 16 September 2025, following the withdrawal of two teams in the
V.League 2, the
Vietnam Football Federation restored the 1,5 relegation spots like the previous season.
Changes from previous season {{location map+ |Vietnam |float=right |width=350 |caption=Locations of the
2025–26 V.League 1 teams |places=
Quy Nhon Binh Dinh relegated after finishing as runners-up in the
2023–24 season, ending their 4 consecutive years in Vietnamese top-flight.
Phu Dong Ninh Binh made their first appearance in the V.League 1. This marked the return of a team from what is
the pre-merger Ninh Binh to the league after 11 years following the dissolution of
Vissai Ninh Binh in 2014. On 4 August, VPF confirmed that
2024–25 V.League 2's third placed team
PVF-CAND will replace Quang Nam's slot, following
Truong Tuoi Dong Nai's refusal to participate. This is PVF-CAND's first ever appearance in the V.League 1.
Name changes • In June 2025, Phu Dong Ninh Binh FC changed their name to
Ninh Binh FC. • On 14 July 2025, Becamex Binh Duong changed their name to
Becamex Ho Chi Minh City FC. • In the same day, Ho Chi Minh City FC changed their name to
Cong An Ho Chi Minh City FC.
Stadiums and locations Number of teams by region ==Personnel and kits==