The following lists events in the year 1921 in Hungary.

Incumbents 

 Regent: Miklós Horthy
 Prime Minister: Pál Teleki (to 14 April), István Bethlen (from 14 April)
 Speaker of the National Assembly: István Rakovszky (to 30 July), Gaszton Gaál (from 12 August)

Events

March 

 14 March - Act III of 1921 passes the National Assembly. The so-called "order law" invests powers in the government to protect the social order against communists and other radicals
 27 March  - Easter Crisis: Charles IV returns to Hungary at Szombathely
 28 March - Easter Crisis: Charles IV negotiates with Horthy in Budapest. Horthy refuses to resign power. Charles IV returns to Szombathely.

April 

 1 April - Easter Crisis: People's Assembly supports Horthy against Charles IV
 5 April - Easter Crisis: Charles IV leaves Hungary
 6 April - Act III of 1921 comes into effect
 14 April - István Bethlen replaces Pál Teleki in government

 23 April - Romania signs alliance with Czechoslovakia

May 

 4 May - Land swap agreement between Romania and Czechoslovakia

June 

 7 June - Romania signs alliance with Kingdom of Serbs, Croats and Slovenes

August 

 6 August - Inter-Allied General Committee publishes the plan for the transfer of Burgerland from Hungary to Austria in 3 stages (A, B and C Zone).
 9-10 August - Pact between Czechoslovakia and Austria. Czechoslovakia would support Austrian territorial claims and LoN loan, Austria denounces Habsburg restoration attempts.
 14 August - Serbian–Hungarian Baranya–Baja Republic declared
 21 August - Serbian–Hungarian Baranya–Baja Republic dissolved
 22 August - Hungarian forces enter Pécs
 26 August - Scheduled date of evacuation of Zone A, delayed by 48 hours
 27-28 August - Uprising in West Hungary begins

September 

 7-8 September - Second Battle of Ágfalva
 15 September - Italian foreign minister Pietro Tomasi Della Torretta begins to mediate between Austria and Hungary
 16 September - Prónay briefly arrests Antal Lehár
 23 September - Entente demands Hungary evacuate Zone B and C
 29 September - 
 Gyula Gömbös writes to Prónay, asking him to take control of Zone B and C after Hungarian evacuation.
 Ludwig III of Bavaria arrives to Sárvár where he spends his last weeks

October 

 3 October - Hungarian forces leave Zone B and C. 
 4 October - Pál Prónay declares the independent state of Lajtabánság in Burgerland
 7 October - Austro-Hungarian negotiations begin in Venice with Italian mediation
 13 October - Venice Agreement between Hungary and Austria
 17-18 October - Legitimists plot a coup against Horthy in west Hungary
 20 October - Charles IV returns to Hungary for the second time via airplane landing at Dénesfa at the Cziráky estates
 22 October - 04:30 - Telegraph notifies the Government about Charles IV's return
 23-24 October - Battle of Budaörs, Charles IV halted before entering Budapest
 24 October - Czechoslovakia and Kingdom of Serbs, Croats and Slovenes issue an ultimatum to Hungary to resist and overthrow the Habsburgs, threaten military intervention.
 25 October - II. Army of Lajtabánság under Miklós Budaházy enters the Sopron plebiscite zone with 400 men and overthrows the legitimist government.
 27 October - 6/II Infantry Battalion replaces paramilitaries in Sopron
 31 October - Prónay and his officers summoned to Horthy in person, ordered the evacuation of Lajtabánság by 5 November

November 

 1 November - Charles IV leaves Hungary for the last time
 5 November - Rongyos Gárda leaves Burgerland, Lajtabánság dissolved
 6 November - The People's Assembly dethrones the House of Habsburg-Lorraine (1921:XLVII Act)
 11 November - Inter-Allied General Committee, after notified by Hungary that the paramilitaries were evacuated, orders Austria to take control of Burgerland, except for the Sopron plebiscite zone.
 13-15 November - Austria takes over North Burgerland (north of Sopron)
 19 November - Charles IV arrives to Madeira
 25-29 November - Austria takes over Central and South Burgerland (south of Sopron)

December 

 2 December - Austrian, Hungarian and Entente authorities sign a protocol on the completed handover of Burgerland.
 14-16 December - Sopron Plebiscite: Sopron votes to stay in Hungary
 15-16 December - Czechoslovakia and Austria sign a pact of friendship and co-operation
 20 December - Council of Ambassadors accepts the result of the plebiscite
 22 December -
 Bethlen-Peyer Pact between the Bethlen Government and the Social Democratic Party
 1921:LIII. Act, establishment of levente organisations
 23 December - Amnesty for political prisoners sentenced below 5 years

Deaths

 7 March - Karl Tersztyánszky von Nádas
 8 August - Károly Haggenmacher 
 26 August - Sándor Wekerle
 18 October - Ludwig III of Bavaria
 31 December - József Kiss

References

External links 

 Murber, Ibolya (2021). Nyugat-Magyarországtól Burgenlandig, 1918-1924. Budapest, BTK Történettudományi Intézet
 Ormos, M. (1998). Magyarország a két világháború korában, 1914-1945 (Vol. 6). Csokonai Kiadó.
 Romsics, I. (2004). Magyarország története a XX. században. Osiris. 
 Szinai, M., & Szűcs, L. (1965). The Confidential Papers of Admiral Horthy. Corvina.
 Várdy, Stephen Béla (1997). Historical Dictionary of Hungary. The Scarecrow Press
 Zsiga, Tibor (1989). Horthy ellen, a királyért.
 https://1914-1918.btk.mta.hu/terkepek?start=16

 
1920s in Hungary
Years of the 20th century in Hungary
Hungary
Hungary