Insu

Insu may refer to:
 * İnsu, village in Yenişehir District, Turkey
 * Insu-dong, neighbourhood of Gangbuk-gu, Seoul, South Korea
 * Insu (Korean name), Korean unisex given name
 * Queen Insu (1437-1504)

INSU may refer to:
 * Insituform, British provider of trenchless technologies for gravity and pressure pipelines
 * Institut national des sciences de l'univers (National Institute for Earth Sciences and Astronomy) of the French Centre national de la recherche scientifique