Mongolia's diplomatic missions abroad list records the Embassy of Mongolia to the Republic of Hungary in Budapest, with S.Baatarjav as chief of mission, at Bogar Utca 14/c, Budapest 1022 (Consul.mn, diplomatic missions abroad list, dated 1 September 2024).

Diplomatic relations between Mongolia and Hungary were first established on 28 April 1950. The Embassy of Mongolia in Budapest opened in 1957 (The Asia Review, reporting the 75 Years of Diplomatic Relations exhibition, 30 April 2025).

The list of diplomatic missions of Mongolia records the Budapest embassy as concurrently accredited to Serbia (List of diplomatic missions of Mongolia).

On 9 June 2022 H.E. Baatarjav Sainnyambuu, Ambassador of Mongolia to Hungary, visited the University of Public Service to initiate cooperation between universities specialising in home defence and law enforcement training. The university reported he is a lawyer and brigadier general, had served as Director of the Law Enforcement University of Mongolia and, since 2020, as Deputy Minister of Justice and Home Affairs (Ludovika University of Public Service, 9 June 2022).

At the invitation of Hungary's Minister of Foreign Affairs and Trade Peter Szijjarto, Mongolia's Minister of Foreign Affairs Battsetseg Batmunkh paid an official visit to Hungary on 24-26 April 2025 and held official talks. Mongolia expressed gratitude for Hungarian government scholarship programmes and reaffirmed commitment to expanding education cooperation; the sides agreed on culture and science cooperation including joint scientific and archaeological research, and reaffirmed cooperation in the United Nations and other international organisations (AKIPRESS via BytesEU, 28 April 2025). Hungarian reporting of the joint press conference recorded a 51 percent increase in bilateral trade turnover that year after a record turnover in 2024, driven by pharmaceuticals, agreement to convene the mixed economic committee that year, and 200 scholarships a year offered by Hungarian universities to Mongolian students (Daily News Hungary via Mongolian Business Database).

Newly appointed Ambassador Zeneemyadar Batbayar presented his credentials to Hungarian President Janos Ader. The sides discussed the upgrade of the biocombinat near Ulaanbaatar and cooperation in education and water sector management, and noted opportunities in climate change (Discus Holdings, 14 June 2016, reporting the credentials ceremony).