Claudius Tiberianus was a second-century Roman legionary soldier in Egypt, the recipient of a number of papyrus letters which were rediscovered in the twentieth century. The archive of Claudius Tiberianus was partially published in the eighth volume (Nos. 467–81) of the University of Michigan Papyrology Collection. It comprises 18 papyrus-letters, mostly written by Claudius Terentianus, an Egyptian enrolled in the Roman army, who addresses him as "father." These texts constitute an ancient archive, as they include the letters which were found together in a niche under the staircase of the house of Tiberianus at Karanis between 1924 and 1935, along with further texts, which emerged from the antiquities market.