The Roman town of Mustis (municipium Iulium Aurelium Mustitanum) is near present-day Mest Henshir (Tunisia). Its epigraphic corpus has around 200 inscriptions mainly published at the end of the 19th century and the beginning of the 20th century, when the French archaeological campaigns took place. However, a group of Latin inscriptions discovered during the 1960s remained unpublished. In the reorganisation of the archives of the Institut National d'Histoire de l'Art (Paris) the original photographs, negatives, slides and documents revealed new data. In this article I present five new inscriptions (three votive texts, a quadruple funerary epitaph and a new boundary stone) and new data and photographs of three already known inscriptions published by G. Wilmanns in the CIL. All these texts reveal new data about the territory of the res publica Mustitana, the sacred life of the city (including the confirmation of a Capitol) and new onomastic information about its inhabitants.