Olan

Olan or OLAN may refer to:
 * Olan (mountain), a mountain in the Massif des Écrins in the French Alps (3564 m)
 * Olan (dish), a dish that is part of the Kerala cuisine of South India
 * Olan Mills Portrait Studios, Olan Studios (photographic)
 * Saint Olan (or Olann), patron Saint of the Parish of Aghabullogue in Ireland
 * Olan Montgomery (1963–2020), American pop-artist
 * Olan Soule (1909–1994), American character actor
 * One Letter Aerobatic Notation, OLAN is free software for the design, drawing and viewing of aerobatic sequences; related to the Aresti Catalog Standards document