Papyrus Oxyrhynchus 3035 (or P. Oxy. XLII 3035) is a warrant for the arrest of a Christian, issued by the authorities of the Roman Empire. This is one of the earliest uses of the word Christian attested on papyrus. The manuscript is dated precisely in its closing lines to the third year of the co-regency of Valerian and Gallienus his son, in the third day of the Egyptian month Phamenoth (known as Paremhat in the Coptic calendar). The equivalent date in our Gregorian calendar is 28 February 256 AD.