Active
- AS/NZS 3112
- Activation
- Active (album)
- Active (pharmacology)
- Active (ship)
- Active (song)
- Active Enterprises
- Active Records
- Active living
- Active voice
- Active, Alabama
- Activity (disambiguation)
- HMS Active
- Independent Media Center
- Locomotion No. 1
- Passive (disambiguation)
- Sky Active
- Thermodynamic activity
- USCGC Active
- USCS Active
- USRC Active
- USS Active