The OB II bajnokság (formerly called the OB I/B. bajnokság from 2009-2013) is the second level of ice hockey in Hungary. It lies below the OB I bajnokság.
The league was not contested from 2013-2017. Debreceni HK applied to join the MOL Liga, but were required to wait a year before being officially accepted, so they only fielded junior teams for the 2013-14 season. Tisza Volan Szeged joined the Serbian Hockey League, leaving no remaining teams at this level.
There was a small tournament arranged on March 28 and 29, 2015, in place of a league competition. A six team league was arranged for the 2017-18 season.
Champions
| European Hockey Overview
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| Top-Level Leagues
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International
Alps Hockey League - BeNe League - Erste Liga - International Hockey League - Kontinental Hockey League
National
Andorra - Armenia - Austria - Belarus - Belgium - Bosnia and Herzegovina - Bulgaria - Croatia - Cyprus - Czech Republic - Denmark - Estonia - Finland - France - Georgia - Germany - Greece - Hungary - Iceland - Italy - Kazakhstan - Latvia - Lithuania - Luxembourg - Netherlands - Norway - Poland - Romania - Serbia - Slovakia - Slovenia - Spain - Sweden - Switzerland - Turkey - Ukraine - United Kingdom
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| Second-Level Leagues
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| Belarus - Belgium - Bulgaria - Czech Republic - Denmark - England - Finland - France - Germany - Hungary - Iceland - Italy - Kazakhstan - Latvia - Lithuania - Netherlands - Norway - Poland - Russia - Slovakia - Spain - Sweden - Switzerland - Turkey - Ukraine
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| Third-Level Leagues
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| Austria - Belgium - Czech Republic - Denmark - England - Finland - France - Germany - Hungary - Italy - Netherlands - Norway - Poland - Russia - Scotland - Slovakia - Sweden - Switzerland
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| Fourth-Level and lower Leagues
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| Austria - Belgium (4, 5) - Czech Republic (4, 5) - Finland (4, 5, 6, 7) - France - Germany (4, 5) - Hungary - Italy - Netherlands (4, 5, 6, 7) - Norway (4, 5, 6, 7) - Poland - Russia (Night League, Amateur Leagues) - Sweden (4, 5, 6, 7, 8), Switzerland (4, 5, 6, 7)
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| Cup Competitions
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| Cups
Belarus - Belgium - Bosnia and Herzegovina - Bulgaria - Czech Republic - Denmark - East Germany - Estonia - Finland - France - Germany - Hungary - Iceland - Italy - Kazakhstan - Latvia - Lithuania - Luxembourg - Netherlands (Cup, Ron Berteling Schaal) - Norway - Poland - Romania - Scotland - Serbia - Slovakia - Slovenia - Soviet Union - Spain - Switzerland - Ukraine - Yugoslavia
Supercups
Belgium - Estonia - Hungary - Italy - Poland - Netherlands - Slovenia - Spain
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| Defunct Leagues
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| Soviet Union - Russia - Czechoslovakia - Yugoslavia - West Germany - East Germany - Ireland - Luxembourg - Macedonia - Malta - Portugal - Alpenliga - Interliga - Inter-National League - North Sea Cup - Panonian League - Eastern European - Balkan League (1994-1997) - Baltic League (2001) - Baltic Hockey League (2020) - Carpathian League - Slohokej Liga - Balkan Ice Hockey League - English League - English National League - Scottish National League - British Hockey League - Ice Hockey Superleague - German Championship - Swedish Championship - Klass I - Svenska Serien - Elitserien - Swedish Division I - SM-sarja - Swiss National Championship - Swiss International Championship
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| Women's Leagues
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| International leagues
Elite Women's Hockey League - EWHL Super Cup
National leagues
Austria - Belgium - Bulgaria - Croatia - Czech Republic - Denmark - Estonia - Finland (1, 2, 3, U20, U18, U16) - France - Germany (1, 2, 3, Cup) - Great Britain (England U16) - Hungary - Iceland - Italy - Kazakhstan - Latvia - Lithuania - Netherlands - Norway - Poland - Romania - Russia (U18) - Slovakia - Slovenia - Spain - Sweden (1, 2, 3, 4, U20) - Switzerland - Turkey - Ukraine
Defunct leagues
Czechoslovakia - Interliga - Low Countries Cup
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| Junior Leagues
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| Austria - Belarus - Belgium - Bulgaria - Croatia - Czech Republic (Czechoslovakia) - Denmark - Estonia - Finland - France - Germany (East Germany) - Great Britain - Hungary - Iceland - Italy - Kazakhstan - Latvia - Lithuania - Netherlands - Norway - Poland - Romania - Russia (Soviet Union) - Serbia - Slovakia - Slovenia - Spain - Sweden - Switzerland - Turkey - Ukraine - Yugoslavia
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| University Leagues
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| European University Hockey League - Czech Republic - Great Britain - Netherlands - Russia (RSHL, MSHL, SHLC, SHLMO, SibSHL, SPSHL) - Sweden
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