The term Twilight can refer to several different things in the Kingdom Hearts series:
- The Twilight Town world, where Roxas was born.
- The Twilight Thorn Nobody from Kingdom Hearts II.
- The white material type from Kingdom Hearts II.
- The form Saïx's claymore takes when equipped with the Fearless Gear.
- The "Twilight Blaze" form Roxas's Keyblade takes when equipped with the Ultimate Gear.
- The Realm Between, also known as the Realm of Twilight and the Realm of In-Between.