The following PhD major subjects taught at Technical University of Gabrovo have been accredited:
- Applied Mechanics
- Material Science and Technology of Materials
- Construction Mechanics and Material Resistance
- Machine Studies and Elements
- Theory of Mechanisms, Machines and Automatic Lines
- Hydraulic and Pneumatic Drives
- Mechanical Engineering Technologies
- Material Cutting and Cutting Tools
- Machine Tools and Systems
- Machines and Equipment for Light Industry
- Lighting Equipment and Light Sources
- Electrical Mechanics
- Power Engineering and Electrical Equipment
- Metrology and Metrology Equipment
- Precision and Instrument Engineering
- Industrial Heat Technologies
- Communication Networks and Systems
- Technology of Textile Materials
- Microelectronics
- Optoelectronics
- Integration of Electronics (by branches and research trends)
- Industrial Electronics
- Automation and Computer Science Elements and Devices
- Computer Systems and Networks
- Computer Aided Design in Engineering
- Computerized Systems for Information Processing and Control (by
branches)
