Structure Deck: Lost Sanctuary is a Structure Deck in the Yu-Gi-Oh! Official Card Game (OCG). It is the twentieth deck in the OCG's Structure Deck series (twenty-eighth including the Character Structure Decks), following Structure Deck: Dragunity Drive. The TCG equivalent of this deck is Lost Sanctuary Structure Deck.
Each Structure Deck: Lost Sanctuary contains:
- 1 Preconstructed Deck of 40 cards
- 1 Rulebook
- 1 Playing Guide
- 1 Playmat
ＳＴＲＵＣＴＵＲＥ ＤＥＣＫ—ロスト・サンクチュアリ— (Japanese)