Under the agreement, Lego will roll-out six new construction sets based on iconic scenes and locations, including the Hogwarts Castle, Hagrid's Hut, Hogwarts Express and Quidditch Match. Available in October, the sets feature new and newly decorated minifigures.
Also new to the range will be a constructible board game called Hogwarts, launching in August.
Karen McTier, executive vice president of domestic licensing and worldwide marketing at WBCP commented:
"We have enjoyed a longstanding, successful partnership with The Lego Group around Harry Potter and we are delighted to continue this relationship as we approach the release of the seventh film.
"Fans of the franchise will be excited to discover the wonderfully original Lego products inspired by the beloved stories and characters.
Jill Wilfert, vice president of global licensing at The Lego Group said: "The world of Harry Potter has inspired some of our most successful products and we are thrilled to continue creating imaginative play opportunities for fans everywhere.
"The magical stories brought to life in the films give us the potential for an incredible array of offerings, the best of which are represented in our upcoming lines."
WBCP and TT Games also announced Lego Harry Portter: Years 1-4, the latest addition to the Lego video games franchise. The game will be released this May on multiple gaming platforms.
Meanwhile, Lego will start selling its board games range in the US this summer. The firm will announce ten board games at the US Toy Fair including licensed lines based on Toy Story 3, Prince of Persia, Star Wars 3 and the Harry Potter game.
Also included in the new US range will be the Minotaurus and Ramses Pyramid games, which have already seen success in the UK.
Soren Torp Laursen, president of Lego Americas said: "We are pretty sure we are sitting on a formula that will be worthwhile for the retailers to support."