Argon, a chemical element

Argon, the codename of the first AMD Athlon core

The Eye of Argon, a fantasy novella

Argon Federation, a race in the X Universe

Argon, a codename used for the KH-5 reconnaissance satellite

Argon (Middle-earth), a Noldorin prince

Argon (1908 automobile), a defunct British automobile

Argon (butterfly), a genus of butterflies in the grass skipper family.