A bolt may be one of the following things:

• Bolt or capscrew, see Bolted joint
• Bolt (website)
• Screw, a cylindrical threaded fastener
• Lightning bolt or thunderbolt
• Bolt (firearm), a mechanism used in firearms
• Quarrel, ammunition used in a crossbow
• A fastener formerly used in clinker (boat building) to hold wooden ships together
• Tie rod, used in building
• Deadbolt, an item of door furniture to hold a door
• A large roll of cloth of a definite length
• Bolt (climbing), an anchor point used in rock climbing
• Bolts, a nickname of the San Diego Chargers
• Currency unit in the Ratchet & Clank series of video games
• An Imperial Guard (comics) character named Starbolt or Bolt
• The name of the biomech carried by Kelric in Catherine Asaro's books, the Saga of the Skolian empire.

Bolt