Scientific theory
Theory of everything
Game theory
String theory
Horseshoe Theory
Theory of relativity
M-theory
Music theory
The Big Bang Theory
Recapitulation theory
Graph theory
Conspiracy theory
Superstring theory
Theory of Colours
Probability theory
Decision theory
Social cognitive theory
Euler–Bernoulli beam theory
Set theory
Timoshenko–Ehrenfest beam theory
Systems theory
The Theory of Moral Sentiments
Colour theory
Sociocultural theory
Chaos theory
Algebraic number theory
Number theory
Quantum theory
Analytic number theory
Information theory
Fishhook Theory
Social choice theory
Architectural theory
Hybrid Theory
Kinetic theory
The Theory of Everything (2014 movie)
Naive set theory
Theory of computation
Dynamical systems theory
Miasma theory
Modern Monetary Theory
Game (game theory)
Marlovian theory
James–Lange theory
Cell theory
Domino theory
Phlogiston theory
Penny (The Big Bang Theory)
Control theory
Complexity theory
Theory of Good Human Nature
Ramsey theory
Ring theory
DNA damage theory of ageing
Theory of mind
Action theory
Knot theory
Classical field theory
Atomic theory
Critical race theory
Gateway drug theory
Realism theory
Group theory
Christ myth theory
Automata theory
KK theory
Grand unification theory
Reception theory
Embodiment theory
Category theory
John Dalton
Approximation theory
Zermelo–Fraenkel set theory
Crystal field theory
Chemtrail conspiracy theory
Communication Theory of Secrecy Systems
Glottalic theory
Wheel theory
Selectorate theory
Theory of the Earth
Field (physics)
Two-nation theory
Big Bang
The Theory of Communicative Action
Combinatorial game theory
Decidability theory
Loop (graph theory)
Galois theory
Hybrid Theory EP
Steady-state model
Smiley face murder theory
Mutualism (economic theory)
Economy-of-effort theory
Theory Dasbien
Uses and gratifications theory
Third International Theory
Black swan theory
Unification
Computability theory
Cattell–Horn–Carroll theory
Arrhenius acid-base theory
Secular Shrine Theory
Trait theory
Germ theory of disease
Theory of Evil Human Nature
Algorithmic information theory
Pizzagate conspiracy theory
Moon landing conspiracy theories
Coding theory
Old quantum theory
Theory of forms
R/K selection theory
The Assault on Truth: Freud's Suppression of the Seduction Theory
Critical theory
Elliott wave theory
Social comparison theory
Gesell's Maturational Theory
Order theory
The Genetical Theory of Natural Selection
Information entropy
VSEPR theory
The General Theory of Employment, Interest, and Money
Computational complexity theory
Lagrange's theorem (group theory)
Special relativity
General relativity
Freud's psychoanalytic theories
Psychoanalysis
Jurisprudence
Endosymbiosis
Sahara pump theory
Set
Four temperaments
Plate tectonics
Infant attachment
Graph (mathematics)
The Big Bang Theory (season 1)
Evolution
Mars ocean theory
Quantum mechanics
Archimedes' principle
Styx (band)
Matter
Order (group theory)
Continuum (theory)
Enzyme
Kernel (algebra)
Birefringence
Homology (mathematics)
Political philosophy
Accretion disk
Wave (physics)
Lake Toba
Natural rights and legal rights
Barack Obama citizenship conspiracy theories