Structure Deck: Order of the Spellcasters is a Structure Deck in the Yu-Gi-Oh! Trading Card Game. It is the 45th Deck in the TCG's Structure Deck series, following Structure Deck: Soulburner.

Each Structure Deck: Order of the Spellcasters contains:

- 1 Preconstructed Deck of 41 Main Deck cards and 1 Extra Deck card

- 2 Ultra Rares

- 3 Super Rares

- 37 Commons

- 1 Beginner's Guide

- 1 Double-sided Playmat/Dueling Guide