COA or Certificate of Analysis is an abbreviation for:

  • Care of Address, see Mobile IP # Overview and basic concepts
  • Certificate of Analysis
  • Certificate of Authenticity, see Certificate of Authenticity
  • Coenzyme A
  • Commonwealth of Australia, official name of Australia
  • Chart of accounts - chart of accounts

Côa stands for:

  • Côa, a river in north- eastern Portugal
  • Disambiguation
  • Abbreviation