The Archdiocese of Londrina (Latin: Archidioecesis Londrinensis) is a Latin Church ecclesiastical jurisdiction or archdiocese of the Catholic Church in Paraná state, southern Brazil.

Its cathedral is Catedral Metropolitana Sagrado Coração de Jesus, dedicated to the Sacred Heart of Jesus, in the archiepiscopal see of Londrina.

The Metropolitan has the following Suffragan sees : As of 2014[update], it pastorally served 728,000 Catholics (73.4% of 992,000 total) on 6,714 km² in 76 parishes and 245 missions with 146 priests (75 diocesan, 71 religious), 59 deacons, 383 lay religious (145 brothers, 238 sisters) and 8 seminarians.