* Germany, 1998
* Netherlands, 1998
* Poland, 1998
* United Kingdom, 1998
* France, 2000
* Spain, 2006
* China, 2013
* India, 2013
* Italy, 2013
* Japan, 2013
* South Korea, 2013
* Singapore, 2013
* Switzerland, 2017

In 2011, the Council clarified its criteria for admission of observers, most notably including a requirement of applicants to "recognize Arctic States' sovereignty, sovereign rights and jurisdiction in the Arctic" and "recognize that an extensive legal framework