I only know of Denmark and Germany but only if you have held them for more than a year I believe.
Does anyone know of any others?
There are so many country that do not tax crypto currency related business activities. One of the country in particularly is Nigeria this is a country where Bitcoin and crypto currency in general are not accepted as a means payment for goods and services to the extent that the Nigeria Central bank Governor refer to Bitcoin as a ponzi scheme although he say so as a result of ignorance. And there are so many other countries Africa that do not tax crypto currency related business.
All countries do not charge taxes on sales of bitcoin. They take taxes from Fiat which you received upon the exchange of bitcoins. A lot of people don't see that as a difference, but it's important. In order not to pay taxes at all, you need to be able to use bitcoin as a currency for the purchase of goods. In regular stores it will not but in the store it's real.