FEV or Fev may refer to:
- Forced Expiratory Volume, in spirometry
- Full Electric Vehicle
- Liga FEV Masculina, a men's Spanish volleyball league
- Liga FEV Femenina, a women's Spanish volleyball league
- FEV Inc
- Brendan Fevola, an Australian Rules footballer known by the nickname 'Fev'
- Forced Evolutionary Virus, a fictional mutagenic virus in the Fallout series of computer role-playing games