The project will include designing a key cluster of venues including a temporary training facility, Paralympic archery and tennis venues and a hockey centre when in Legacy mode.
The practice saw off the likes of Adjaye Associates, Bennetts Associates, and David Morley Architects to win the project.
Stanton Williams director Paul Williams, said: ‘We are very excited. Our guiding principle of putting people’s experience of space, light and materials at the core of each design results in a rational and holistic approach to building and urban design.’
The scheme will also include the design and construction of two new land bridges to better connect the Eton Manor site with the rest of the Olympic Park.
ODA chairman John Armitt, said: ‘Stanton Williams were awarded the contract on the basis of an excellent track record in delivering first class design projects in an innovative and sustainable way with a sound proposal for legacy mode.’