The Roman Catholic Diocese of San Marcos de Arica (Latin: Sancti Marci Aricensis) is a diocese located in the city of Arica in the ecclesiastical province of Antofagasta in Chile.

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Diocese of San Marcos de Arica Dioecesis Sancti Marci Aricensis Diócesis de San Marcos de Arica
Cathedral of St. Mark
Location
Country	Chile
Ecclesiastical province	Antofagasta
Metropolitan	Antofagasta
Statistics
Area	16,512 km2 (6,375 sq mi)
Population - Total - Catholics	(as of 2014) 198,400 140,000 (70.7%)
Information
Rite	Latin Rite
Established	17 February 1959 (65 years ago)
Cathedral	Cathedral of St Mark in Arica
Patron saint	St Mark the Evangelist
Current leadership
Pope	Francis
Bishop	Moises Carlos Atisha Contreras
Metropolitan Archbishop	Ignacio Francisco Ducasse Medina
Website
www.obispadoarica.cl

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• 17 February 1959: Established as Territorial Prelature of Arica from the Diocese of Iquique
• 29 August 1986: Promoted as Diocese of Arica
• 12 October 2011: Name Changed to Diocese of San Marcos de Arica

• Bishops of Arica (Roman rite)
  • Bishop Moises Carlos Atisha Contreras, Sch.P. (2014.11.21 – present)
  • Bishop Héctor Vargas Bastidas, S.D.B. (2003.11.25 – 2013.05.14), appointed Bishop of Temuco
  • Bishop Renato Hasche Sánchez, S.J. (1993.05.15 – 2003.04.24)
  • Bishop Ramón Salas Valdés, S.J. (1986.08.29 – 1993.05.15)
• Prelates of Arica (Roman rite)
  • Bishop Ramón Salas Valdés, S.J. (1963.10.08 – 1986.08.29)