Croatia–Slovenia relations

The foreign relations between Croatia and Slovenia are bound together by shared history, neighboring geography and common political ideologies. Both states established diplomatic relations in 1992, following the dissolution of Yugoslavia and the independence of Croatia. Modern relations are warm and friendly. The two states have disputes over their border and sovereign rights over certain nuclear and economic assets. The countries share 670 km (420 mi) of common border. They are perennially each other's largest trading partners on an import-export basis.

The break-up of Yugoslavia and the Yugoslav Wars led to contested succession issues between the two states, mostly around maritime and territorial border disputes. As Slovenia acceded to the European Union (EU) in 2004, it leveraged this position to blockade Croatia's candidacy in 2013 to join the EU in order to settle some of these disputes. The two states allowed the European Commission to successfully arbitrate which saw to Croatia's membership in the EU that year. Both are military allies and members of NATO.

Croatia has an embassy in Ljubljana and two honorary consulates in Maribor and Koper. Slovenia has an embassy in Zagreb and an honorary consulate in Split.