Rigour or rigor describes a condition of stiffness or strictness.
It may also refer to:
Biology Rigor (medicine), or chills Rigor mortis, a stage of death
Other uses Cognitive rigor, in education Rigor Dimaguiba, protagonist of Philippine TV series Batang Quiapo
See also Rigor mortis (disambiguation) Academic honesty Intellectual honesty Mathematical proof Pedantry