ACEO

ACEO may refer to:


 * ACEO (brand), a brand name for the NSAID medication Acemetacin
 * AC Electro-osmosis, a methodology for Optoelectrofluidics
 * Art Cards, Editions and Originals, the Artist trading cards
 * Association of Caribbean Electoral Organizations, a component of the International Foundation for Electoral Systems
 * Advisory Committee for Earth Observation, a department of the European Space Agency's Mission Science Division
 * Associação Comercial e Empresarial de Osasco, a leading company located in Osasco, São Paulo, Brazil