
The deal begins at the start of the 2010/11 NBA season, expected to begin around the end of October.
Sal LaRocca, executive vice-president, NBA global merchandising, said: "The expansion of adidas' apparel rights in Europe gives us a true global partnership that aligns perfectly with our collective strategy to continue growing the game of basketball," said.
He added: "As the NBA continues to grow in popularity throughout Europe, authentic adidas NBA apparel will be available to more fans than ever before."
Adidas is currently in the fourth year of its 11-year global merchandising partnership as the official uniform and apparel provider for the NBA, WNBA, and NBA D-League.
Both parties will support the partnership through global marketing and media initiatives, including NBA Europe Live, presented by EA Sports this year. There will also be grassroots events and branded media programmes throughout the 215 countries in which the league distributes content.