2023 4 Hours of Aragón

The 2023 4 Hours of Aragón was an endurance sportscar racing event held between 23 and 26 August 2023, as the third round of the 2023 European Le Mans Series season.

Entry list
The pre-event entry list consisted of 42 entries in 4 categories - 7 in LMP2, 11 in LMP2 Pro/Am, 12 in LMP3 and 12 in LMGTE.

Nelson Piquet Jr. was replaced by Filipe Albuquerque in the No. 21 United Autosports USA. Piquet was unable to take part in this race due to calendar clash with Stock Car Pro Series. Bent Viscaal replaced Jack Hawksworth in the No. 20 Algarve Pro Racing. In the No. 83 AF Corse Ben Barnicoat was replaced by Alessio Rovera. Both Barnicoat and Hawksworth could not take part in this race due to a clash with IMSA SportsCar Championship. Jacek Zielonka was set to join Glenn van Berlo in the No. 10 Eurointernational but in the end Matthias Lüthen was Berlo's teammate in this race. Tom van Rompuy was replaced by Andreas Laskaratos in the No. 3 DKR Engineering.

United Autosport USA's No. 23 moved from LMP2 Pro/Am to LMP2 class after Jim McGuire was forced to not take part in this race weekend. Garnet Patterson joined Paul di Resta and Guy Smith in the No. 23 squad.

Free practice

 * Only the fastest car in each class is shown.

Qualifying
Pole position winners in each class are marked in bold.

Race result
The minimum number of laps for classification (70% of overall winning car's distance) was 83 laps. Class winners are marked in bold.