A Wiki World Map of Nobel Laureates Distribution.
As of July 2006, 758 individuals and 18 organizations have been awarded the Nobel Prize.
The list shows nationalities of the laureates, as stated at the official website of the Nobel Prize.
You can find the entire list in
Wikipedia with country by country list. From the map below you can see the US, Germany and Great Britain have more than 50 + Nobel Laureates, which is not a surprise they have represented a bulk of Nobel Prize winners so far. The Second level has Russia with 21 Nobel Laureates. Canada has 18 Nobel Laureates. No Asian Country or South American Country have more than 10 Nobel Laureates. South Africa is the lone country in Africa with more than 5 Nobel Laureates.
There is not much content in the site except the Map. For more information on Noble Laureates visit Nobelprize.org, they have a wide variety of Facts and Information.