Recurrence and recurrent may refer to:

• Recurrence relation, an equation which defines a sequence recursively
• Poincaré recurrence theorem, Henri Poincaré's theorem on dynamical systems
• Recurrence plot, a statistical plot that shows a pattern that re-occurs
• Recurrence period density entropy, an information-theoretic method for summarising the recurrence properties of a dynamical systems
• Recurrent neural network, a special artificial neural network
• Recurrent rotation, a term used in contemporary hit radio for frequently aired songs