Breakers assistant coach Dean Vickerman explained the club was keen to get the Tall Black's signature sooner rather than later.
"Leon's greatest asset is his ability to be an explosive athletic scorer - be it from the three point line, in transition or attacking offensive boards. That value extends beyond game day, though - we expect Leon to guard Tom Abercrombie every day in practice next season.
"Leon is a proven winner - coming off back-to-back New Zealand NBL championships and back-to-back ANBL championships. As a coaching staff we look forward to assisting Leon fight for a more significant role in the team over the next two seasons."
Henry is currently playing for the Otago Nuggets in the NZ NBL and will hope to play a role for the Tall Blacks as they seek qualification to the London Olympic Games before returning to prepare for another campaign with the Breakers.
The signing brings to seven the number of players confirmed for next season, - Abercrombie, Alex Pledger, Dillon Boucher, Daryl Corletto, CJ Bruton, Mika Vukona and Henry.