The Diocese of Coxim (Latin: Dioecesis Coxinensis) is a Latin Church ecclesiastical territory or diocese of the Catholic Church in Mato Grosso do Sul state, southwestern inland Brazil.
It is a suffragan in the ecclesiastical province of the metropolitan Archdiocese of Campo Grande.
Its cathedral episcopal see is Catedral São José, dedicated to Saint Joseph, in the city of Coxim.
As of 2014[update], it pastorally served 110,000 Catholics (78.0% of 141,000 total) on 45,000 km2 (the municipalities Coxim, Alcinópolis, Camapuã, Costa Rica, Figueirão, Pedro Gomes, Rio Negro, Rio Verde de Mato Grosso, São Gabriel do Oeste and Sonora) in 14 parishes with 17 priests (15 diocesan, 2 religious), 1 deacon, 22 lay religious (4 brothers, 18 sisters) and 8 seminarians.
This article on a Roman Catholic diocese in Brazil is a stub.