Relations between Hungary and Serbia, or Serbo-Hungarian relations form a part of the wider politics of Central and Southeast Europe. The two countries have a long relationship stretching back to the Middle Ages. History of official diplomatic relations of Hungary and Serbia dates back to 21 November 1882, when they were established between the Kingdom of Serbia and Austria-Hungary. Today, Hungary has an embassy in Belgrade and a general consulate in Subotica, while Serbia has an embassy in Budapest and an honorary consulate in Szeged.

Hungarians in Serbia are a recognized national minority in Serbia. According to the 2022 census, the population of ethnic Hungarians in Serbia is 184,442, constituting 2.8% of the total population, which makes them the second-largest ethnic group in the country behind Serbs and the largest minority group. The vast majority of them live in the northern autonomous province of Vojvodina, where they number 182,321 and make up 10.5% of the province's population. Almost 99% of all Hungarians in Serbia live in the province of Vojvodina. Most Hungarians in Serbia are Roman Catholics, while smaller numbers of them are Protestant. Their cultural center is located in Subotica.