Abia or ABIA may refer to:

• Austin-Bergstrom International Airport, in Austin, Texas, United States
• Australian Book Industry Awards, national literary and industry awards

• Abia (name)
• Abia (mythology), the nursemaid of Glenus, the son of Heracles

• Abia State, state in southeastern Nigeria
  • Abia State University
  • Abia State Polytechnic
  • Abia Warriors F.C., based in the city of Umuahia, Abia State
• Abia de las Torres, a municipality in the province of Palencia, Castile and León, Spain
• Abia de la Obispalía, a municipality in Cuenca, Castile-La Mancha, Spain
• Abia Community, a constituency and community council in the Maseru Municipality in the Maseru District of Lesotho
• Abia (Messenia), town of ancient Messenia, now occupied by Avia, Messenia, Peloponnese, Greece
• Abia, Enugu State, town in Enugu State, Nigeria

• Abia (sawfly), genus of conifer-feeding sawflies
• Abias, a saint of the Coptic Church