Observer States to the Council of Europe:

Canada

The Holy See

Japan

Mexico

The United States of America

Non-member States with observer status in the CDNET:

Brazil

Cabo Verde

Non-member States with observer status in the CDNET having had observer status in the CAI:

Argentina

Australia

Cameroon

Costa Rica

Ecuador

Ghana

Israel

Peru

Uruguay

Non-member States with which the Council of Europe has a Neighbourhood Partnership including relevant co-operation activities : 

Kazakhstan

Morocco

Tunisia