Aska can refer to:
- ASKA (band), an American heavy-metal band
- Aska Hundred, or Aska härad, was an hundred (administrative division) of Östergötland, Sweden.
- Isuzu Aska, a Japanese car.
- Aska (singer-songwriter), a Japanese singer-songwriter (Old name: Ryō Aska, Ryō Asuka), formerly one of the Chage and Aska duo.
- Aska, or Ashka, a location in Afghanistan.
- Aska (group), a Yugoslavian pop group.
- Asika, a small town in Ganjam district, Orissa, India.
- Askas village in Cyprus.
- Aska, the spirit of light in Tales of Phantasia and its prequel, Tales of Symphonia.
- Aska a female ninja from Takara's Cool Girl toy line and a playable character in the video games Cy Girls and DreamMix TV World Fighters.
- Aska (TMNT) a female fighter from the Super Nintendo Entertainment System video game Teenage Mutant Ninja Turtles: Tournament Fighters.
- Aska Yang, Taiwanese Mandopop singer.
- ASKA, an innovative software package produced at Instituts für Statik und Dynamik ISD c1965 for the solution of problems in engineering requiring the solution of partial differential equations, and using the Finite Element Method.