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About fifteen rock-cut stibadia ( i.e. circular or semi-circular dining-couches) have been recorded in Petra and its surroundings, together with dozens of rock-cut triclinia. A detailed survey’s fieldwork was carried out in 2010 and 2011, upgrading the documentation of these poorly studied structures. It brought a new understanding of their typology, contexts of use and datation. The rock-cut stibadia of Petra belong to two main categories: one associates a semi-circular dining-couch and a small rock-cut court in funerary contexts, the other is a rather circular structure that appears in religious contexts. Both groups find parallels in Alexandrian and Ptolemaic contexts, explaining their presence in the Nabataean capital.