Lightning gun could refer to:
Canon
- Lightning gun: a type of weapon that fired bolts of energy.
- Grysk lightning gun: a type of lightning gun used by the Grysk.
Legends
- Lightning gun: a type of weapon.
- Lightning gun (Ganath): a starship mounted weapon produced by the Ganathans.
- Lightning gun (Goroth Prime): a personal energy weapon manufactured by the Jer'N be' Milad Vel on Goroth Prime.
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