Periander, the tyrant of Corinth in the VI cent. B.C. according to the late chronology here also supported by the author (F. Logoluso), is known for his particular restrictions he imposed to his people: the so called Periandric prohibitions. Ancient and modern scholars, who studied Periander’s biography, are all persuaded that he was obsessed by the fear to be removed by enemies of his tyrannical power. The author believes that those prohibitions require to be reconsidered and explained not only by taking into account his political fear but also by interpreting them as urban measures. More practical reasons, such as the lack of land for his citizens, can better explain Periander’s need to preserve his government by means of prohibition. Among Periandric prohibitions, two are to be taken into account: the first is the prohibition to linger in the city, whereas the second one concerns the prohibition to sit/remain in the market. The first prohibition was probably imposed to prevent the afflux of strangers. The debate focuses on some ancient writers’ choice to use the word asty instead of polis. This may be crucial to understand the sense of restriction. Moreover, the second prohibition to sit/remain in the agora’ is related to the trade function of market (agora’). The author intends to bring to the attention, through the archaeological evidences from the Roman agora’, the archaic usage of the agora’ itself at Periander’s times might be a more possible explanation to avoid an indiscriminate and intense use of the Corinthian agora’ by non Corinthian people or visiting/passing through foreigners.