2023 Ultimate Cup Series

The 2023 Ultimate Cup Series was the fifth season of the Ultimate Cup Series. It began at Circuit Paul Ricard on 25 March and ended at the same venue on 26 November. The Ultimate Cup Series is a program comprising multiple endurance and sprint championships across different classes of motor racing.

Calendar
The 2023 calendar was announced on 10 October 2022. The round at Misano World Circuit Marco Simoncelli was to be replaced by a round at the newly built Circuit de Mirecourt near Nancy in eastern France. Championship organizers were unable to finalize an agreement on the round, however, so in June, the venue was replaced by a round at Estoril.

Endurance Prototype Challenge
The Endurance Prototype Challenge is open to LMP3, Nova Proto NP02s and Group CN cars.

Race results
Bold indicates overall winner.

Endurance GT Touring Challenge
The Endurance GT Touring Challenge is open to GT3, GT4, single-make series (Porsche Carrera Cup, Ferrari Challenge, Lamborghini Super Trofeo), TCR cars.

Race results
Bold indicates overall winner.

Sprint GT Touring Challenge
The Sprint GT Touring Challenge is open to GT3, GT4, single-make series (Porsche Carrera Cup, Ferrari Challenge, Lamborghini Super Trofeo), TCR cars.

Race results
Bold indicates overall winner.

Challenge Monoplace
The Challenge Monoplace was open to Tatuus FR-19 cars in the F3R class, Tatuus FR2.0/13s in the FR2.0 class and Mygale M14-F4 and Tatuus F4 cars in the F4 class.

Graff Racing driver Paul Trojani won the F3R championship, with Formula Motorsport driver Walter Rykart victorious in the F3R Ultimate Class. CMR driver Jordan Roupnel claimed the FR2.0 championship, and Philippe Daric won in the F4 class driving for Kennol Racing Team and JRM Racing Team.

Standings
The points awarded for the races at Navarra were multiplied by 1.5, while the points awarded for the races at Estoril were multiplied by 2.