The Roman Catholic Metropolitan Archdiocese of Huancayo (Latin: Huancayen(sis)) is a Latin Metropolitan archdiocese in Peru's western Amazonian Junín Region.

Its cathedral episcopal see is Catedral de la Santísima Trinidad (dedicated to the Holy Trinity) in the city of Huancayo.

• Established on 18 December 1944 as Diocese of Huancayo on territory split off from the Diocese of Huánuco
• Lost territory on 15 May 1585 to establish the Territorial Prelature of Tarma
• 30 June 1966: Promoted as Metropolitan Archdiocese of Huancayo

Bishops of Huancayo

• Leonardo José Rodriguez Ballón, O.F.M. (1945–1946), appointed Archbishop of Arequipa
• Daniel Figueroa Villón (1946–1956), appointed Bishop of Chiclayo
• Mariano Jacinto Valdivia y Ortiz (1956–1966); see below

Archbishops of Huancayo

• Mariano Jacinto Valdivia y Ortiz (1966–1971); see above
• Eduardo Picher Peña (1971–1984), appointed Military Vicar and later Military Ordinary of Peru
• Emilio Vallebuona Merea, S.D.B. (1985–1991)
• José Paulino Ríos Reynoso (1995–2003), appointed Archbishop of Arequipa
• Cardinal Pedro Ricardo Barreto Jimeno, S.J. (2004–2024)
• Luis Alberto Huamán Camayo O.M.I. (2024–)

• Carlos Alberto Salcedo Ojeda, O.M.I. (2016–2021)

Apart from the metropolitan archdiocese, its province comprises two suffragan dioceses

• Diocese of Huánuco
• Diocese of Tarma

• Roman Catholicism in Peru

• GCatholic.org, with incumbent biography links
• Catholic Hierarchy
• Diocese website

12°04′03″S 75°12′35″W / 12.0676°S 75.2098°W / -12.0676; -75.2098