The Diocese of Ipiales (Latin: Ipialensis) is a Latin Church ecclesiastical territory or diocese of the Catholic Church in Southern Colombia. It is a suffragan diocese in the ecclesiastical province of the metropolitan Archdiocese of Popayán.

• Established on 23 September 1964 as Diocese of Ipiales, on territory split off from the Diocese of Pasto

As per 2015, it pastorally served 560,288 Catholics (90.2% of 620,969 total) on 11,089 km in 45 parishes and 2 missions with 95 priests (87 diocesan, 8 religious), 2 deacons, 86 lay religious (16 brothers, 70 sisters) and 37 seminarians.

• Its cathedral is the Catedral de San Pedro Mártir, dedicated to the martyr Peter of Verona, in the episcopal see of Ipiales in Nariño Department, near the border with Ecuador
• It also has a Minor Basilica : Basílica Santuario de Nuestra Señora de Las Lajas, dedicated to Our Lady, in Ipiales, in the same department.

(all native Colombians)

• Miguel Angel Arce Vivas (31 Oct 1964 – 7 April 1965), next Metropolitan Archbishop of Popayán (Colombia) (1965.04.07 – 1976.10.11), died 1987
• Alfonso Arteaga Yepes (24 July 1965 – 25 Oct 1985), next Bishop of Espinal (Colombia) (1985 – death 1989.10.30); previously Titular Bishop of Auzegera (1962.09.12 – 1965.07.24) as Auxiliary Bishop of Popayán (1962.09.12 – 1965.07.24)
• Ramón Mantilla Duarte, Redemptorists (C.Ss.R.) (25 Oct 1985 – retired 16 Jan 1987), died 2009; previously Titular Bishop of Sala Consilina (1971.01.16 – 1977.04.26) as Vicar Apostolic of Sibundoy (Colombia; see later Promoted as Diocese of Mocoa–Sibundoy) (1971.01.16 – 1977.04.26), Bishop of Garzón (Colombia) (1977.04.26 – 1985.10.25)
• Gustavo Martínez Frías (16 Jan 1987 – 18 March 1999), next Metropolitan Archbishop of Nueva Pamplona (Colombia) (1999.03.18 – death 2009.08.29)
• Arturo de Jesús Correa Toro (29 Jan 2000 – retired 3 February 2018)
• José Saúl Grisales Grisales (3 February 2018 – ...), no previous prelature.

• List of Catholic dioceses in Colombia
• Roman Catholicism in Colombia

• GCatholic.org, with Google map & HQ satellite photo - data for all sections
• diocesan website (in Spanish)

0°49′25″N 77°38′05″W / 0.8235°N 77.6346°W / 0.8235; -77.6346