| APID | Acute Pelvic Inflammatory Disease 
| Others |
| APID | Advanced Placement International Diploma
| Others |
| APID | Agile Protein Interaction DataAnalizer
| Others |
| APID | Agile Protein Interaction DataAnalyzer
| Others |
| APID | Application Identification
| Others |
| APID | Application Process Identifier
| Others |
| APID | Application Process Identifier DEMETER
| Others |
| APID | Application Program Interface Division
| Others |
| APID | Applications Process IDentification
| Others |
| APID | Association of Professional Interior Designers
| Others |
| APID | Associazione Professionale Italiana Danzamovimentoterapia
| Others |