This paper investigates the mythological wall paintings decorating the room known as the tablinum in atrium houses at Pompeii and Herculaneum. Scholars have considered the tablinum part of the “public” section of the house and have linked this room to the formal morning greeting, or salutatio, despite the fact that no ancient literary source mentions the tablinum in connection with this daily ritual. These assumptions have conditioned the way in which scholars have interpreted the decoration, which is analyzed in relation to the social activities supposedly associated with this type of room or discussed in terms of moral ideals and social values. This study demonstrates that the figurative imagery within the tablinum does not necessarily relate to social practices in that space but instead informs us about a common visual vocabulary shared by different strata of society.