Weimar Triangle
|   Weimar Triangle members | |
| Official languages | French German Polish | 
| Membership | |
| Establishment | 28–29 August 1991 | 
| Area | |
| • Total | 1,314,075 km2 (507,367 sq mi) | 
| Population | |
| • 2022 estimate | 190,349,334 | 
| GDP (PPP) | 2023 estimate | 
| • Total | $11.1 trillion | 
| GDP (nominal) | 2023 estimate | 
| • Total | $7.9 trillion | 
The Weimar Triangle (French: Triangle de Weimar; German: Weimarer Dreieck; Polish: Trójkąt Weimarski) is a regional alliance of France, Germany, and Poland created in 1991 in the German city of Weimar. The group is intended to promote co-operation between the three countries in cross-border and European issues.
It exists mostly in the form of summit meetings between the leaders of the three countries, and of their foreign ministers. The collaboration between member states includes inter-parliamentary contacts and military, scientific, and cultural cooperation.