LEGO Harry Potter sets are a popular line of building toys based on the Wizarding World, offering fans the chance to recreate iconic locations, vehicles, and characters from the films. The collection includes everything from detailed, large-scale display models to smaller, collectible sets, appealing to a wide range of builders, from children to adult enthusiasts. Many of the Hogwarts-themed sets are modular and can be connected to form a larger, more detailed depiction of the castle and grounds, encouraging a cohesive and expandable display. Notable collector's editions include the massive Hogwarts Castle (71043) and the intricate Diagon Alley (75978).

Beyond the modular Hogwarts system, the LEGO Harry Potter theme offers a variety of standalone sets and figures that capture memorable moments and characters. Recent sets include the Gringotts Wizarding Bank – Collectors' Edition (76417) with its detailed interior and a Ukrainian Ironbelly dragon, and the character-focused Dobby the House-Elf (76421), which includes iconic accessories from the movies. The range also features unique builds like the Talking Sorting Hat (76429) with sound effects and a Book Nook: Hogwarts Express (76450) that functions as a display item. These different types of sets allow builders to either construct expansive scenes or focus on beloved individual characters and objects, providing a comprehensive and magical building experience.