The following countries have either attempted to develop, actually built, or bought weapons of mass destruction, including biological, chemical, and nuclear weapons.
List
Legend:
- C (Confirmed)
- S (Sharing)
- D (Developing)
- A (Attempted)
- P (Potential)
- F (Former)
- N (Never)
| Programs per country | Biological | Chemical | Nuclear |
|---|---|---|---|
| Albania | N | F | N |
| Algeria | N | N | A |
| Argentina | N | N | A |
| Australia | N | F | A |
| Brazil | N | N | A |
| Bulgaria | N | F | F |
| Canada | F | F | F |
| China | P | F | C |
| Egypt | N | C | N |
| France | F | F | C |
| Germany | F | F | S |
| India | N | F | C |
| Iran | N | F | D |
| Iraq | F | F | A |
| Israel | P | P | P |
| Italy | F | F | S |
| Japan | F | F | A |
| Kazakhstan | N | N | F |
| Libya | N | F | A |
| Mexico | N | N | A |
| Myanmar | N | P | P |
| Netherlands | N | F | S |
| North Korea | C | C | C |
| Pakistan | N | N | C |
| Philippines | N | N | A |
| Poland | N | N | F |
| Rhodesia | F | F | N |
| Romania | N | N | A |
| Russia | C | C | C |
| Saudi Arabia | N | N | P |
| South Africa | F | F | F |
| South Korea | N | N | A |
| Spain | N | N | A |
| Sweden | N | F | A |
| Switzerland | N | F | A |
| Syria | N | C | P |
| Taiwan | P | F | A |
| Ukraine | N | N | F |
| United Kingdom | F | F | C |
| United States | F | F | C |