| List of Theories |
| Atomic theory |
Musical set theory |
| Automata theory |
Network theory |
| Axiomatic set theory |
Naive set theory |
| Big Bang theory |
Number theory |
| Bundle theory |
Order theory |
| Catastrophe theory |
Percolation theory |
| Category theory |
Potential theory |
| Cell theory |
Probability theory |
| Chaos theory |
Proof theory |
| Coding theory |
Psychoanalytical criticism (Literary theory) |
| Color theory |
Psychoanalytical theory (psychology) |
| Combinatorial game theory |
Quantity theory of money (Economics) |
| Communication theory |
Quantum evolution (Biology) |
| Computability theory |
Quantum field theory |
| Computational complexity theory |
Quark theory |
| Computational learning theory |
Queueing theory |
| Control theory |
Ramsey theory(Mathematics) |
| Critical theory |
Range theories of probability (Mathematics/Philosophy) |
| Decision theory |
Rational expectations theory (Economics) |
| Detection theory |
Rawl's theory of justice (Economics) |
| Domain theory |
Real self (Politics/Philosophy) |
| Elimination theory |
Reactance theory (Psychology) |
| Estimation theory |
Relativity theory |
| Evolutionary Theory |
Representation theory |
| Field theory |
Ring theory (Physics) |
| Galois theory |
Set theory |
| Game theory |
Sexual theory |
| Germ theory |
Sieve theory |
| Graph theory |
String Theory |
| Group theory |
Systems theory |
| Information theory |
Teletraffic queuing theory |
| Instructional theory |
Twistor theory |
| Internal set theory |
Value theory |
| Knot theory |
Wheel theory |
| Learning theory (education) |
Zermelo set theory |
| Modular representation theory |
Zermelo-Fraenkel set theory |
