John XVIII | |
|---|---|
| Bishop of Rome | |
| Church | Catholic Church |
| Papacy began | January 1004 |
| Papacy ended | July 1009 |
| Predecessor | John XVII |
| Successor | Sergius IV |
| Personal details | |
| Born | |
| Died | July 1009 Rome, Papal States |
| Other popes named John | |
Pope John XVIII (Latin: Ioannes XVIII; died June or July 1009) was the bishop of Rome and nominal ruler of the Papal States from January 1004 (25 December 1003 NS) to his abdication in July 1009. He wielded little temporal power, ruling during the struggle between John Crescentius and Emperor Henry II for the control of Rome.