Singapore's ambassador-at-large Professor Tommy Koh has been awarded the 2014 Great Negotiator Award.

The award is given out by the Program on Negotiation, an inter-university collaboration between Harvard University, Massachusetts Institute of Technology and Harvard Kennedy School.

Prof Koh was honoured for his contributions in negotiation and dispute resolution, including his roles in the Law of the Sea, the "Rio" Earth Summit, the Asean Charter and the Singapore-United States Free Trade Agreement.

Past recipients of the award include former US Secretary of State James Baker; Nobel Peace Prize winner and former Finland president Martti Ahtisaari; and former United Nations High Commissioner for Refugees, Sadako Ogata.