AX4 or AX-4 may refer to:

Aeolus AX4, compact crossover SUV Axiom Mission 4, a 2025 private space mission to the ISS with astronauts from the space agencies of India, Hungary, and Poland/ESA AX-4: Black Hole, a 1982 videogame; see List of Project EGG games Aisin AX4 transmission; see List of Aisin transmissions Clariion AX4, a storage area network server

See also

AX (disambiguation)