[2] In relation to third parties, both countries supported position of Argentina in its Falkland Islands sovereignty dispute with the United Kingdom in the past.
[3][4] Spain is one of five member states of the European Union that does not recognize unilateral declaration of independence of Kosovo and is actively opposing its membership in international organisations such as UNESCO and Interpol.
[5][6] In addition, Spain is supporting Serbia's insistence on establishment of Community of Serb Municipalities in Kosovo as provided by the 2013 Brussels Agreement signed under the auspices of the European Union.
[9] In 1903 Vicente Blasco Ibáñez arrived at Belgrade on the Orient Express service where he stated that city is "relatively cosmopolitan, with trams, cafes, and theaters, but full of nervous military men, women wanting to imitate French fashion and drunk orthodox priests".
[9] After the Serbian army's retreat through Albania, which resulted in more than 200,000 deaths, the country's government together with some of its population settled at the Greek island of Corfu.
[9] During the interwar years, famous Serbian poet Jovan Dučić (1919-1921) and Ivo Andrić (1928-1929, 1961 recipient of the Nobel Prize in Literature) were serving as ambassadors of the newly founded Kingdom of Yugoslavia to Spain.
[10] At the time, newly united Germany was the strongest advocate of independence for Croatia and Slovenia with all 12 members of the European Community, as well as Austria and Switzerland following German push for recognition.
[16] On the meeting of European External Action Service in 2018 Spanish representatives together with some of those from Visegrád Group required to get actively involved in the EU facilitated Belgrade–Pristina negotiations.
[17] Serbian president Aleksandar Vučić visited Spain on 23 February 2022, with scheduled meetings with king Felipe VI and prime minister Pedro Sánchez, seeking to seal the purchase of two military aircraft C-295.
[18] On 29 July 2022, in the wake of a visit to the Western Balkans (including Belgrade) of Spanish prime minister Pedro Sánchez and a meeting with Serbian president Aleksandar Vučić, the former stressed the Spanish support to the advance in Serbia's EU membership negotiations, also declaring that "international law and the territorial integrity of nations must be respected" in relation to Kosovo.
[19] In his novel "Danube: A Sentimental Journey from the Source to the Black Sea", Italian novelist Claudio Magris is describing 1734 settlement of Spaniards in the town of Bečkerek in modern-day Vojvodina where they have established a so-called New Barcelona.
[21] Joint Spanish-Serbian Chamber of Commerce (Spanish: Camara de Comercio Hispano-Serbia, Serbian: Шпанско-српска привредна комора) was established in Madrid on July 6, 2017.