It is licensed from Warner Bros. Lego models of important scenes, vehicles and characters were made for the first six films and all of the published books.

The main focus of the line is Harry Potter's first year at Hogwarts School of Witchcraft and Wizardry as he discovers that he is a famous wizard and begins his education.

Evanna Lynch, who portrayed Luna Lovegood in the Harry Potter films, she explores on a magical adventure through Warner Bros.

In January 2004, Lego owner and CEO Kjeld Kirk Kristiansen announced a change in direction for the company, which at the time was facing a DKK 1.4 billion loss, and that the company would focus on core products and not "big, movie-related IPs such as Harry Potter".

These sets have newly decorated mini-figures and animals including Luna Lovegood, Bellatrix Lestrange, new owls and new pigs.

[7] However, a Lego Dimensions add-on pack featuring Harry Potter and Voldemort was scheduled to be released on 27 September 2016.

In 2021, it was announced that Harry Potter Hogwarts Crests (set number: 31201) would be released on 1 January 2021 as a sub-brand of the Lego Art theme.

Harry Potter, Ron Weasley, Hermione Granger, Viktor Krum (Shark Head), Merperson Harry Potter, Voldemort, Lucius Malfoy (Masked), Peter Pettigrew, 4 Skeletons Harry Potter, Professor Dumbledore, Mad-Eye Moody, Hungarian Horntail Headmaster Karkaroff, Viktor Krum Only one set was produced based on the fifth film foreshadowing the theme's assumed retirement.

[14] Lego revived the Harry Potter theme after a three-year gap from previous set released in 2007.

However, the Trolley, The Lab and the Mini Hogwarts Express were all promotional sets that were released in different countries at different times, which were either being given away with newspaper offers, the purchase of Diagon Alley from the Lego Shop and also with the pre-order of the game, Lego Harry Potter: Years 5–7.

Harry Potter, Neville Longbottom, Remus Lupin, Professor Sprout, Gregory Goyle, Lucius Malfoy, and a Dementor.

This add-on pack includes Harry Potter and Voldemort minifigs that are largely similar to the 2010/2011 versions.

The add-on pack also includes small versions of the Weasleys' flying car and the Hogwarts Express engine.

[17] Garrick Ollivander Godric Gryffindor, Helga Hufflepuff, Salazar Slytherin and Rowena Ravenclaw Harry Potter and Ron Weasley Gellert Grindelwald and Seraphina Picquery Newt Scamander, Jacob Kowalski, Tina Goldtein and Queenie Goldstein Harry Potter, Hermione Granger, Ron Weasley, Severus Snape, Seamus Finnigan and Argus Filch Harry Potter, Ron Weasley, Hermione Granger, Susan Bones, Minerva McGonagall, Albus Dumbledore, Rubeus Hagrid, Quirinus Quirrell and Nearly Headless Nick Harry Potter, Ron Weasley, Hermione Granger, Remus Lupin, Trolley Witch and a Dementor Harry Potter, Hermione Granger, Severus Snape, Oliver Wood, Marcus Flint and Lucian Bole Boggart, Horace Slughorn, Madame Rolanda Hooch, Professor Dolores Umbridge Harry Potter sets were released on June 1, 2019.

Since the 2018 return of the theme, Lego has released two sets of Harry Potter Collectible Minifigures Series, the first in 2018 and another in 2020.

[70][71][72] The crossover toys-to-life game Lego Dimensions[73][74][75][76] developed by Traveller's Tales features content based on both the original Harry Potter and Fantastic Beasts and Where to Find Them.

A "team pack"[77][78][79][80] includes an additional level that recreates the events of the original film and adds Harry Potter and Lord Voldemort as a playable characters.

Consumer sales grew 13 percent, significantly ahead of the toy industry, contributing to global market share growth.

[91] In 2018, Hogwarts Express and Great Hall Harry Potter were awarded "DreamToys" in the It's Showtime category by the Toy Retailers Association.

[94] In 2020, Hedwig (set number: 75979) was awarded "DreamToys" in the Licensed To Thrill category by the Toy Retailers Association.

[95] In 2021, Hogwarts Chamber of Secrets (set number: 76389) was awarded "DreamToys" in the Licensed To Thrill category by the Toy Retailers Association.

[96] In 2022, The Ministry of Magic (set number: 76403) was awarded "DreamToys" in the Film & TV Favourites category by the Toy Retailers Association.