Quanta may also refer to:
- QUANTA (competition), an international science competition
- Quanta Computer, a Taiwan-based manufacturer of electronic and computer equipment
- Quanta Cura, a Papal encyclical issued by Pope Pius IX on 8 December 1864
- Quanta Display Inc., a Taiwanese company manufacturing TFT-LCD panels
- Quanta Plus, a web development tool
- Quanta Services, a US-based specialty contractor for the electric, gas, and telecommunications industries
- Quanta Technology, a utility infrastructure consulting company
- A line of bowling balls by Brunswick Corporation
- Qantas, an Australian airline