The depositio martyrum, an early liturgical calendar compiled before 336 CE, is the oldest extant document about the cult of the Christian martyrs venerated in the Church of Rome. The list records the burial date (day, month, year) of 47 martyrs. In the case they were martyred in Rome, it also mentions their burial places in the cemeteries and catacombs situated along the great roads radiating from Rome. The list is preserved as text number 12 in the Chronograph of 354 (Depositio episcoporum).

The martyrs were the stars of early Christianity. Their death was their birthday (natales martyru…