Hidra

Hidra may refer to:

Places

 * Hidra, Tunisia, a municipality in the Kasserine Governorate, Tunisia
 * Hidra, Vest-Agder, a former municipality in Vest-Agder county, Norway
 * Hidra (island), an island in Flekkefjord municipality in Agder county, Norway
 * Hidra Church, a church in Flekkefjord municipality in Agder county, Norway

Scientific Devices

 * Hybrid Illinois Device for Research and Applications, HIDRA, a toroidal fusion device at the University of Illinois Urbana-Champaign