Critical point

Critical point may refer to:
 * Critical phenomena in physics
 * Critical point (mathematics), in calculus, a point where a function's derivative is either zero or nonexistent
 * Critical point (set theory), an elementary embedding of a transitive class into another transitive class which is the smallest ordinal which is not mapped to itself
 * Critical point (thermodynamics), a temperature and pressure of a material beyond which there is no longer any difference between the liquid and gas phases
 * Quantum critical point
 * Critical point (network science)
 * Construction point, in skiing, a line that represents the steepest point on a hill