QF may stand for:
- Qantas, the oldest and largest airline of Australia
- Qatar Foundation, a private, chartered, non-profit organization in the state of Qatar
- Quick-firing gun, a sort of artillery piece
- a British ordnance term referring to a gun breech that uses metallic cartridges
- Quality factor, the measure of the "quality" of a resonant system
- Quality factor (video compression)
- Qualifying facility, a class of electric generating facilities defined in the United States Public Utility Regulatory Policies Act that receive special rate treatment
- Quiverfull, a movement of Christians who eschew all forms of birth control