The 2025 Categoría Primera B season (officially known as the 2025 Torneo BetPlay Dimayor season for sponsorship reasons) is the 36th season of the Categoría Primera B since its founding as Colombia's second division football league.
The season began on 30 January 2025.
[1] 16 teams take part in the season.
The previous season's champions Unión Magdalena and runners-up Llaneros were promoted to Primera A for the 2025 season,[2] being replaced in Primera B for this season by Jaguares and Patriotas, who were relegated from Primera A at the end of the 2024 season after finishing in the bottom two places of the top tier's relegation table.
[3] For this season Orsomarso changed their home stadium, moving from their usual venue Estadio Francisco Rivera Escobar in Palmira to Estadio Municipal Raúl Miranda in Yumbo, Valle del Cauca Department after signing an agreement with the Yumbo Municipality to play there for one season.