Castellum of Bădeni

{{Infobox castrum

| name = Castellum of Bădeni

| image =

| caption =

| alt_names =

| known_as =

• Castra of Bădeni
• Castra of Mărtiniș

| built_during_reign_of =

| founded = 2nd century AD

| abandoned = 3rd century AD

| attested_by =

| previous_fortification =

| type =

| robust_struct_material = Stone

| robust_struct_built_during_reign_of =

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| weak_struct_material =

| weak_struct_built_during_reign_of =

| weak_struct_built =

| weak_struct_abandoned =

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| commanders =

| legions =

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| alae =

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| province = Dacia

| admin_unit_1 = Dacia Superior

| admin_unit_2 = Dacia Apulensis

| limes =

| links =

| coordinates = {{coord|46.21|25.34|display=inline,title}}

| altitude =

| map = Romania

| place_name =

| location_town = Bădeni

| location_county = Harghita

| location_state =

| location_country = {{ROU}}

| ref:UK:OSNG =

| ref:RO:LMI = HR-I-s-B-12648{{cite web|url=http://www.cultura.abt.ro/Files/GenericFiles/LMI-2010.pdf |publisher=Ministerul Culturii şi Patrimoniului Naţional |title=Lista Monumentelor Istorice 2010 ("2010 List of Historic Monuments") |work=Monitorul Oficial al României, Partea I, Nr. 670 ("Romania's Official Journal, Part I, Nr. 670"), page 1361 |date=1 October 2010 |accessdate=4 January 2013 |url-status=dead |archiveurl=https://web.archive.org/web/20120610112533/http://www.cultura.abt.ro/Files/GenericFiles/LMI-2010.pdf |archivedate=10 June 2012 }}

| ref:RO:RAN = 84950.03{{cite web|url=http://ran.cimec.ro/sel.asp?lang=EN&descript=badeni-martinis-harghita-castellum-de-la-badeni-cod-sit-ran-84950.03|publisher=ran.cimec.ro|title=Castellum de la Bădeni|work=National Archaeological Record of Romania (RAN)|date=2008-03-24|accessdate=4 January 2013|url-status=dead|archiveurl=https://web.archive.org/web/20140219010614/http://ran.cimec.ro/sel.asp?lang=EN&descript=badeni-martinis-harghita-castellum-de-la-badeni-cod-sit-ran-84950.03|archivedate=19 February 2014}}

| ref:RO:SIRUTA =

| discovery_year =

| condition = Ruined

| controlled_by =

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}}

The castellum of Bădeni was a fort in the Roman province of Dacia in the 2nd and 3rd centuries AD. Its ruins are located in Bădeni ({{langx|hu|Bágy}}) in the commune of Mărtiniș ({{langx|hu|Homoródszentmárton}}) in Romania.