OEI

OEI is an abbreviation for:

• several Eastern European institutes
• the Austria Institute
• Organization of Ibero-American States ( Spanish Organización de Estados Iberoamericanos , Portuguese Organização dos Estados Ibero-americanos ), a sub-organization of the Ibero-American Summit
• One Engine Inactive / One Engine Inoperative, also OEO (One Engine Out), flight condition in which an engine has failed

Oei is the family name of the following people:

• Marc Oei (* 1962), German architect

This is a disambiguation page for differentiating between several terms identified with the same word.