Complementarity
- Complement (disambiguation)
- Complementarianism
- Complementarity (molecular biology)
- Complementarity (physics)
- Complementarity theory
- Complementarity-determining region
- Complementary angles
- Complementary good
- Complimentary (disambiguation)
- International Criminal Court
- Interpersonal compatibility
- Quark–lepton complementarity
- Self-complementary graph
- Yin and yang