A titulus pictus is an ancient Roman commercial inscription made on the surface of certain artefacts, usually the neck of an amphora. Typically, these inscriptions were made in red or black paint. The inscription specifies information such as origin, destination, type of product, and owner. Tituli picti are frequent on ancient Roman pottery containers used for trade. They were not exclusively used for trade. They were also used to provide easily recognizable advertisements and may have served as insurance if a good was damaged in some way. There are around 2,500 tituli picti recorded in CIL IV (the volume of Latin inscriptions from Pompeii and Herculaneum).
The text of these inscriptions used a wide variety of abbreviations such as primum, excellens, optimum, flos, florum, praecellens, penuarium, and secundarium. It is possible that these epithets were used to convey the quality of the product. These abbreviations were organized into a style consisting of several elements. Numerals were used to indicate the age and weight of the contents and the weight of the container when empty. The measurement of the container's weight would be duplicated by another component of the titulus pictus in the genitive case. There was also a tria nomina indicating the buyer and the seller. The fifth element was the name of the owner.