Arkos or variants can refer to:
Places Árkos, commune in Covasna County, Romania Kara Ada (Bodrum), island near Bodrum, Turkey, known in Greek as Arkos
Fictional characters Arkos Balkar, son of the Supreme Lord in the Japanese web manga Centuria
Arkos (Game Over), fictional lieutenant and protagonist of the 1987 action video game Game Over
Arkos, a ship between Jaune Arc and Pyrrha Nikos, both members of Team JNPR in the web series RWBY Mike Arkos, fictional mechanic boss in the 2016 American horror film The Amityville Terror
Other uses Arkos (video game), 1988 horizontal shooter video game by MSX; see List of MSX games ArkOS, Linux distribution "Ark OS", registered trademark possibly related to the operating system Harmony OS ARKOS, Singapore-based subsidiary of the Indian industrial company Apar Industries