EPSO may refer to:
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European Personnel Selection Office
The European Personnel Selection Office (EPSO) is responsible for selecting staff to work for the institutions and agencies of the European Union including the European Parliament, the European Council, the Council of the European Union, the Eur ...
, agency to hire staff for the European Union
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Hellenic Socialist Patriotic Organisation
The ESPO ( el, Ελληνική Σοσιαλιστική Πατριωτική Οργάνωσις, translation=Hellenic Socialist Patriotic Organization) was a collaborationist, pro-Nazi organization created in the summer of 1941 in German-occupie ...
, a collaborationist organization in Greece during World War II
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Evolutionary particle swarm optimization and
enhanced particle swarm optimization, types of
particle swarm optimization
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