Thunder

Thunder may be referring to:
 * Thunderbolt, an item in the Mario Kart series and a special move in Super Mario RPG: Legend of the Seven Stars.
 * One of the following special moves in the Super Smash Bros. series:
 * Pikachu's Thunder, based on the Pokémon move.
 * Pichu's Thunder, based on the Pokémon move.
 * Robin's Thunder, based on the tome from the Fire Emblem series.