The terms Blade (レイヴ Reivu , lit. "Rave") may refer to a number of techniques in the Kingdom Hearts series.
- Sonic Blade, an Ability in Kingdom Hearts, Kingdom Hearts Chain of Memories, Kingdom Hearts II and Kingdom Hearts 358/2 Days, Attack Command in Kingdom Hearts Birth by Sleep and Kingdom Hearts 3D: Dream Drop Distance, and special attack in Kingdom Hearts Union χ.
- Chaos Blade, an Attack Command introduced in Kingdom Hearts Birth by Sleep.
- Bladecharge, a Command Style in Kingdom Hearts Birth by Sleep and Dual Style in Kingdom Hearts 3D: Dream Drop Distance.
- Blade Bash, an Overclock ability in Kingdom Hearts Re:coded.
- Blade Line, a Compiled Command in Kingdom Hearts Re:coded.
- Blade Rush, a Finish Command in Kingdom Hearts Re:coded.
- Blade of Glory, a special attack in Kingdom Hearts Union χ.
- Blade of Seven, a special attack in Kingdom Hearts Union χ.
- Blades of Two, a special attack in Kingdom Hearts Union χ.
- Blitz Blade, a special attack in Kingdom Hearts Union χ.
- Demolition Blade, a special attack in Kingdom Hearts Union χ.
- Flame Blade, a special attack in Kingdom Hearts Union χ.
- Frost Blade, a special attack in Kingdom Hearts Union χ.
- Spark Blade, a special attack in Kingdom Hearts Union χ.
- Wind Blade, a special attack in Kingdom Hearts Union χ.
- Blades of the Round, a Shotlock in Kingdom Hearts III.