East Asia, Eastern Asia, or Eastasia can refer to:

• East Asia, the geographical region
• Eastern Asia (WGSRPD), a region used in recording the distribution of plants
• East Asia (album), a record by Miyuki Nakajima
• Eastasia (Nineteen Eighty-Four), a fictional superstate in George Orwell's book 1984 which consists of all countries in East Asia.