- AFib stands for Atrial Fibrillation
- AFIB stands for Association Française des Intermédiaires Bancaires (French: French Association of Intermediate Banking)
- AFIB stands for Association Française des Ingénieurs Biomédicaux
- AFIB stands for Atrial Fibrillation Investigation with Bidisomide (cardiology)
- AFIB stands for Association Familiale Intercommunale de Beauvais (French: Beauvais Intercommunal Family Association; Beauvais, France)
- AFIB stands for Al-Faysal Investment Bank Ltd. (Pakistan)
AFIB