The judicial centre, in the historic civic district on the north bank of the Singapore River, is the practice's first law court.
Housing 12 civil courts, eight criminal courtrooms and three appellate courts, the building also provides facilities for the Singapore Academy of Law.
The country's Court of Appeal sits 'symbolically' on the top of the courthouse in a disc-shaped rotunda which includes a public viewing platform.
On the lower levels there is also a library, a bistro and an exhibition describing the history of the courts and judicial system of Singapore.
David Nelson, the deputy chairman of Foster and Partners, said the building 'reinterprets Singapore's vernacular architecture' and conveys an 'image of dignity, transparency and openness'.
He said: 'Our ambition was to meet the challenging logistical and spatial requirements of a court building and, at the same time, provide an efficient and pleasurable place to work.
'The Supreme Court is a complex building, but one that relates in scale and character to the historic city centre, creating a new family member to the existing urban fabric.'