| ACEI | Academic Center for Equity and Inclusion 
| Others |
| ACEI | Academic Credentials Evaluation Institute
| Others |
| ACEI | ACE inhibitors
| Others |
| ACEI | Act Commit Empower And Inspire
| Others |
| ACEI | Angiotensin Converting Enzyme Inhibition
| Others |
| ACEI | Angiotensin Converting Enzyme Inhibitor
| Others |
| ACEI | Angiotensin Converting Enzyme Inhibitors
| Others |
| ACEI | Angiotensin-Converting Enzyme Inhibitor
| Others |
| ACEI | Angiotensin-Converting Enzyme Inhibitor(s)
| Others |
| ACEI | Apparato centrale elettrico a itinerari
| Others |
| ACEI | Associated Consulting Engineering Incorporated
| Others |
| ACEI | Association For Childhood Education International
| Others |
| ACEI | Association for Cultural Economics International
| Others |
| ACEI | Association of Consulting Engineers of Ireland
| Others |
| ACEI | Autorite Canadienne pour les Enregistrements Internet
| Others |