The name Master is used to refer to several different concepts in the Kingdom Hearts series:
- The Drive Form which specializes in both Keyblade and magical attacks.
- The ability which allows Sora to quickly enter Master Form.
- Keyblade Master, the title given to exceptional Keyblade wielders who pass the Mark of Mastery exam.
- The Master of Masters, mentor of the Foretellers in Kingdom Hearts χ.
- Master Control Program, a major antagonist from Space Paranoids in Kingdom Hearts II.
- Symphony Master, an Unversed found in Kingdom Hearts Birth by Sleep.
- Wheel Master, an Unversed found in Kingdom Hearts Birth by Sleep.
- Mimic Master, an Unversed found in Kingdom Hearts Birth by Sleep.
- Egg Master, a Heartless found in Kingdom Hearts χ.
- Aerial Master, a Heartless found in Kingdom Hearts 358/2 Days.
- Barrier Master, a Heartless found in Kingdom Hearts 358/2 Days.
- Master's Defender, Eraqus's Keyblade.
- Combo Master, an ability that appears in Kingdom Hearts II Final Mix.
- Master Strike, a technique that appears in Kingdom Hearts II.
- Master Magic, a technique that appears in Kingdom Hearts II.
- Master's Ring, an accessory found in Kingdom Hearts II.
- Master Earring, an accessory found in the first Kingdom Hearts.
- Master's Circle, a ring found in Kingdom Heartss 358/2 Days.
- Kingdom Hearts: Trinity Master Pieces, a compilation game of the Kingdom Hearts series.