| Jurisdiction: | Diocese |
| Gliwice | |
| Latin: | Dioecesis Glivicensis |
| Local: | Diecezja Gliwicka |
| Country: |  Poland |
| Metropolitan: | Katowice |
| Denomination: | Catholic Church |
| Sui Iuris Church: | Latin Church |
| Rite: | Roman Rite |
| Cathedral: | Sts. Peter and Paul Cathedral, Gliwice |
| Area Km2: | 2,250 |
| Population: | 658,377 |
| Population As Of: | 2021 |
| Catholics: | 587,763 |
| Catholics Percent: | 89.3 |
| Metro Archbishop: | Adrian Joseph Galbas |
| Auxiliary Bishops: | Andrzej Iwanecki |
| Emeritus Bishops: | Jan Kopiec |
| Website: | www.kuria.gliwice.pl |
The Diocese of Gliwice (Latin: Glivicen(sis)) is a Latin Church ecclesiastical territory or diocese of the Catholic Church in Poland. Its episcopal see is located in the city of Gliwice. The Diocese of Gliwice is a suffragan diocese in the ecclesiastical province of the Archdiocese of Katowice., about 89% of the population in the territory of the diocese is self-described Catholic, however only 39% are practising Catholics.