ECHA is the European Chemicals Agency, an agency of the European Union.

ECHA may also refer to:

• European Council for High Ability, an NGO of the Council of Europe concerned with giftedness
• Eastern Canada Hockey Association, formerly known as the Eastern Canada Amateur Hockey Association (ECAHA)
• Eastern Collegiate Hockey Association, US
• HADHA, an enzyme
• Edmonton Clinic Health Academy, a building at the University of Alberta