Question: what countries do not participate in the olympics?
Answer: Americas. Anguilla (UK territory) Montserrat (UK territory) ... 
Asia. Iraqi Kurdistan (autonomous region of Iraq) Macau (autonomous region of China)[3]
Europe. Abkhazia (partially recognized country) Catalonia (region of Spain) ... 
Oceania. New Caledonia (territory of France) [4] Niue (associated state of New Zealand) [4]