EEA or Eea may refer to:
- Eea or Electron affinity, the energy required to detach an electron from a singly charged negative ion
- River Eea, in Cumbria, England
- EEA Helicopter Operations, a Dutch subsidiary of CHC Helicopter
- Egyptian Engineering Agencies, a company based in Cairo
- Environment of evolutionary adaptedness, a term in the field of evolutionary psychology
- Environmental-economic accounting
- Ethylene acrylic acid
- European Economic Area
- European Environment Agency
- Exchange Equalisation Account, the British Treasury's reserve fund
- Extended Euclidean Algorithm