Extremaduran Regional Action
{{Expand Spanish|topic=hist|date=January 2020|Acción Regional Extremeña}}
{{Infobox political party
| name = Extremaduran Regional Action
| native_name = Acción Regional Extremeña
| logo =
| logo_size =
| secretary_general = Enrique Sánchez de León
| president =
| leader =
| wing1_title =
| wing1 =
| foundation = {{Start date|df=yes|1976|11|07}}
| dissolution = {{End date|df=yes|1978|10}}
| merger =
| merged = Union of the Democratic Centre
| slogan =
| headquarters =
| ideology = Regionalism
| position = Centre-right
| national = UCD
| international =
| newspaper =
| youth_wing =
| colorcode = {{party color|Extremaduran Regional Action}}
| flag =
| country =
| state = Spain
| colours =
}}
The Extremaduran Regional Action ({{langx|es|Acción Regional Extremeña}}; AREX) was a Spanish political party founded on 7 November 1976 as the first regionalist party in Extremadura.{{cite news |date=9 November 1976 |title=Nace Acción Regional Extremeña |url=https://elpais.com/diario/1976/11/09/espana/216342015_850215.html |language=Spanish |newspaper=El País |access-date=6 January 2020}}{{cite news |date=12 March 1977 |title=Sólo para extremeños |url=https://elpais.com/diario/1977/03/12/espana/226969238_850215.html |language=Spanish |newspaper=El País |access-date=6 January 2020}} Enrique Sánchez de León was the party's secretary-general from 26 March 1977.{{cite news |date=27 March 1977 |title=Sánchez de León, elegido secretario de Acción Regional Extremeña |url=https://elpais.com/diario/1977/03/27/espana/228265215_850215.html |language=Spanish |newspaper=El País |access-date=6 January 2020}} AREX joined the Union of the Democratic Centre (UCD) electoral alliance ahead of the 1977 Spanish general election,{{cite news |date=20 April 1977 |title=Suárez recibió al partido de Sánchez de León |url=https://elpais.com/diario/1977/04/20/espana/230335203_850215.html |language=Spanish |newspaper=El País |access-date=6 January 2020}}{{cite news |date=28 June 1977 |title=De la unificación de UCD sólo habrá una "declaración de intención" |url=https://elpais.com/diario/1977/06/28/espana/236296802_850215.html |language=Spanish |newspaper=El País |access-date=6 January 2020}} gaining 4 seats in the Congress of Deputies.{{cite web |url=http://www.historiaelectoral.com/ucd.html |title=Union of the Democratic Centre, Democratic and Social Centre |language=Spanish |website=historiaelectoral.com |publisher=Electoral History |accessdate=6 January 2020}} The party would be eventually merged into the UCD upon the party's constitution as a unitary party.{{cite news |date=18 October 1978 |title=La compleja transformación de una coalición en un partido unificado |url=https://elpais.com/diario/1978/10/18/espana/277513205_850215.html |language=Spanish |newspaper=El País |access-date=6 January 2020}}