Helical

Helical may refer to:
 * Helix, the mathematical concept for the shape
 * Helical engine, a proposed spacecraft propulsion drive
 * Helical spring, a coilspring
 * Helical plc, a British property company, once a maker of steel bar stock
 * Helicoil, a mechanical thread repairing insert
 * H-el-ical//, stage name for Hikaru, Japanese singer