2023 Italian Formula 4 schedule:
- April 22-23: Imola (FRECA)
- May 6-7: Misano (Italian GT)
- May 27-28: Spa-Francorchamps (Euroformula Open)
- June 24-25: Monza (Italian GT)
- July 22-23: Paul Ricard (FRECA / Euroformula Open)
- Sept 30-Oct 1: Mugello (Euroformula Open)
- Oct 14-15: Vallelunga (Italian GT)
2023 British Formula 4 schedule:
- April 22-23: Donington Park (TOCA)
- May 6-7: Brands Hatch Indy (TOCA)
- May 20-21: Snetterton (TOCA)
- June 3-4: Thruxton (TOCA)
- June 17-18: Oulton Park (TOCA)
- June 24-25: Silverstone (British Endurance)
- July 29-30: Croft (TOCA)
- Aug 12-13: Knockhill (TOCA)
- Aug 26-27: Donington Park (TOCA)
- Oct 7-8: Brands Hatch GP (TOCA)
2023 French Formula 4 schdule:
- April 8-9: Nogaro (FFSA GT)
- May 6-7: Magny-Cours (FFSA GT)
- May 13-14: Pau GP (ETCR / Euroformula Open)
- June 3-4: Spa-Francorchamps (GB3 / Supercar Challenge)
- July 15-16: Misano (GT World Challenge)
- Sept 23-24: Lédenon (FFSA GT)
- Oct 7-8: Paul Ricard (FFSA GT)
2023 Spanish Formula 4 schedule:
- May 5-7: Spa-Francorchamps (24h GT Series)
- May 27-28: Aragón (RFEDA)
- June 24-25: Navarra (RFEDA)
- Sept 23-24: Jerez (RFEDA)
- Sept 30-Oct 1: Estoril (Eurocup-3)
- Oct 14-15: Valencia (RFEDA)
- Nov 11-12: Barcelona (RFEDA)
2023 Danish Formula 4 schedule:
- April 29-30: Padborg Park (Super GT)
- May 12-13: Anderstorp (STCC)
- June 25-26: Karlskoga (STCC)
- Sept 2-3: Djursland
- Sept 15-16: Padborg Park (Super GT)
- Sept 30-Oct 1: Jyllands-Ringen (TCR Denmark)
2023 ACCR Formula 4 schedule:
- April 8-9: Oschersleben
- April 29-30: Hungaroring
- May 20-21: Red Bull Ring
- June 10-11: Slovakia Ring
- Aug 5-6: Most
- Sept 9-10: Brno