Doctor of philosophy (phd)
- Doctor of philosophy phd computer science
- Doctor of philosophy phd in management
- Doctor of philosophy phd chemistry
- Doctor of philosophy phd meaning
- Doctor of philosophy phd in health policy and management
- Doctor of philosophy phd physics
- Doctor of philosophy phd in psychology
- Doctor of philosophy phd economics
- Doctor of philosophy phd in law
- Doctor of philosophy phd in artificial intelligence
- Doctor of philosophy phd in business administration
- Doctor of philosophy phd in nursing
- Doctor of philosophy phd in education
- Doctor of philosophy phd in intelligence and global security
- Doctor of philosophy phd in mathematics and computational science