The 2025–26 ABB FIA Formula E World Championship will be the twelfth season of the FIA Formula E championship, a motor racing championship for electrically powered vehicles recognised by motorsport's governing body, the Fédération Internationale de l'Automobile (FIA), as the highest class of competition for electric open-wheel racing cars.

It is set to be the fourth and final season of the Formula E Gen3 Evo, with the Gen4 regulations coming into effect the following season.

All teams will use the Formula E Gen3 Evo car on Hankook tyres.

After three years of competing in the series, the McLaren Formula E Team confirmed it would not return to the championship for the 2025–26 season to focus on its LMDh project in the World Endurance Championship. The team did not find a buyer and shut down, leaving Nissan without a customer team for the first time since the 2021–22 season.

Citroën announced they would be joining Formula E in the 2025–26 season, as Stellantis replaced Maserati MSG Racing, which had competed in the series for 3 years, with the Citroën brand. This marks the marque's debut in top-level single-seater racing.

TAG Heuer ended their partnership with Porsche after being their title sponsor for six seasons.

Envision Racing and Robin Frijns parted ways at the end of the 2024–25 season, following six seasons together across two spells. To replace Frijns, the team signed Jaguar's reserve driver Joel Eriksson, who entered ten Formula E races in 2021 and 2024, for his full-season debut.

Taylor Barnard, who finished fourth in his debut season with McLaren, moved to DS Penske, replacing Jean-Éric Vergne, who ended his affiliation with the DS Automobiles brand after eight seasons. Vergne moved over to newly entered Stellantis sister brand Citroën, where he was joined by season eleven runner-up Nick Cassidy, who departed Jaguar TCS Racing after two seasons with the team. Former champion Stoffel Vandoorne left Maserati MSG to become Jaguar's reserve driver. This left Jake Hughes without a seat.