You can find multiple rankings of countries by oil or gas reserves. Rankings are usually based on proven reserves or estimated reserves, so there can be quite a difference. There is also the difference between oil and gas reserves and their production. Also a new reserves are being discovered, so the data may not be the most recent.
Many countries in Europe have some oil or gas reserves, but the most of them are not large.
Countries with large proven oil reserves in Europe:
- Russia
- Norway
- United Kingdom
- Romania
- Italy
- Denmark
- Turkey
Countries with large proven gas reserves in Europe:
- Russia
- Norway
- Ukraine
- United Kingdom
- Netherlands
- Romania