AU4 Australian Championship
| Category | FIA Formula 4 |
|---|---|
| Country | Australia |
| Region | Oceania |
| Inaugural season | 2015 |
| Constructors | Mygale (2015–2019, 2025) Tatuus (2024–present) |
| Engine suppliers | Ford (2015–2019, 2025) Stellantis FIRE (2024–present) |
| Tyre suppliers | Hankook (2015–2019) Giti (2024–present) |
| Drivers' champion | Noah Killion |
| Teams' champion | AGI Sport |
| Official website | https://au4-championship.com.au/ |
| Current season | |
AU4 Australian Championship (formerly known as the Formula 4 Australian Championship) is an Australian motor racing series for open-wheel cars complying with FIA Formula 4 regulations. The inaugural championship, known as the CAMS Jayco Australian Formula 4 Championship, was organised from 2015 to 2019. The series was revived by a new promoter in 2024, and renamed after another change of promoter in 2025.
Formula 4 was developed and certified by the FIA as the first step out of karting in the FIA Global Pathway from Karting to Formula One; as such, the category is designed for junior drivers seeking a professional career in motorsport.