Materials: Highly-enriched uranium
As of 4 November 2013, 30 countries had at least 1 kg of highly-enriched uranium in their civilian stocks. All HEU has been removed from 27 countries. 68 countries (including Taiwan) have research reactors that use HEU or LEU fuel.
More than 10000 kg: (2 countries)
- Russia
- United States
1000-10000 kg: (6 countries)
- Canada
- China
- France
- Japan
- Kazakhstan
- United Kingdom
100-1000 kg: (7 countries)
- Belarus
- Belgium
- Germany
- Italy
- Netherlands
- Poland
- South Africa
10-100 kg: (4 countries)
- Israel
- North Korea
- Pakistan
- Uzbekistan
1-10 kg: (6 countries)
- Argentina
- Australia
- India
- Iran
- Norway
- Switzerland
About 1 kg: (5 countries)
- Ghana
- Indonesia
- Jamaica
- Nigeria
- Syria
Cleared: (27 countries)
- Austria
- Brazil
- Bulgaria
- Czech Republic
- Chile
- Colombia
- Denmark
- Georgia
- Greece
- Hungary
- Iraq
- Latvia
- Libya
- Mexico
- Philippines
- Portugal
- Romania
- Serbia
- Slovenia
- South Korea
- Spain
- Sweden
- Taiwan
- Thailand
- Turkey
- Ukraine
- Vietnam
Countries with research reactors that never used HEU: (11 countries)
- Algeria
- Bangladesh
- Congo (DRC)
- Egypt
- Finland
- Malaysia
- Morocco
- Peru
- Tunisia
- Uruguay
- Venezuela
