| Abbreviation | Definition |
|---|---|
| AAN | Afghanistan Analysts Network |
| AAN | American Action Network |
| AAN | Another Authors Note |
| AAN | Ascending Arousal Network |
| AANCA | Atypical Anti Neutrophil Cytoplasmic Antigens |
| AANE | Auto Auction of New England |
| AANH | Allergy Associates of New Hampshire |
| AANI | Advanced Access Network Interface |
| AANI | Agri Aqua Network International |
| AANL | Anesthesia Associates of New London |
| AANN | Analog Artificial Neural Network |
| AANN | As Autoassociative Neural Network |
| AANNEMER | Aannemersbedrijf |
| AANO | Albanian American National Organization |
| AANORM | AANorman |
| AANP | Adult Abuse Neglect Prevention |
| AANP | Akamai Accelerated Network Partner |
| AANP | Akamai Accelerated Network Partners |
| AANR | Adopt A Natural Resource |
| AANS | Advances in Artificial Neural Systems |