Croatia
Denmark
England
France
Germany
Greece
Italy
Poland
Republic of Ireland
Russia
Spain
Sweden
Ukraine
205
126(qualified) nations and 204(estimated) nations
204 nations or National Olympic Committees (NOCs) participated in the 2012 London Olympics.
because they are part of the European Nations.
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There are 246 taking part in the olympic
no.
205 nations
yes
josh
yes
Yes