A special relationship is a diplomatic relationship that is especially strong.
For the historically close relationship between the United Kingdom and the United States see Special Relationship. In its extended use outside the Anglosphere, it has also been used to describe the whole of EU–US relations and the following relations:
Albania–Kosovo relationsAlbania–Turkey relationsAustralia–New Zealand relationsAzerbaijan–Turkey relationsBelarus–Russia relationsBhutan-India relationsBrazil–Portugal relationsCanada–Netherlands relationsCanada–United States relationsChina–Germany relationsChina–Pakistan relationsChina–Russia relationsEgypt–Sudan relationsEgypt–United Arab Emirates relationsFrance–India relationsFrance–Monaco relationsHoly See–Italy relationsIndia–Israel relationsIndia–Russia relationsIsrael–United States relationsJapan–United States relationsKosovo–Turkey relationsLaos–Vietnam relationsMoldova–Romania relationsPakistan–Saudi Arabia relationsSaudi Arabia–United States relationsSerbia-Montenegro relationsRelations between the different parts of the British Empire and CommonwealthCanada–United Kingdom relationsEgypt–United Kingdom relationsIndia–United Kingdom relationsSouth Africa–United Kingdom relationsUnited Arab Emirates–United Kingdom relationsRelations between member states of the European UnionBelgium–Netherlands relationsCyprus–Greece relationsFinland–Sweden relationsFrance–Germany relationsFrance–Greece relationsFrance–Italy relationsGermany–Italy relationsGreece–Italy relationsHungary–Poland relations