Langgaard

Langgaard is a surname of Danish origin. Notable people with this surname include:
 * Rued Langgaard - Danish composer and organist
 * Siegfried Langgaard - Danish pianist and composer, father of Rued Langgaard
 * Johannes Peter Langgaard - Danish mechanician, bricklayer and businessman, father of Siegfried, and grandfather of Rued Langgaard
 * Jacoba Langgaard - Faroese football midfielder