Graffiti patterns are among the most important historical monuments after the Achaemenid era in Persepolis. These works have been seen in two places, namely Thatcher's Palace Palace and Queen's Palace (Takht Jamshid Museum). Researchers have presented several hypotheses about these motifs and their historical attribution. Among the goals of the current research, in addition to addressing the background of the studies conducted on these works, is the introduction of new Graffiti patterns that have not been reported on before. Which historical period do these works belong to? This is the main question of the present research. Six of these works belong to the Thatcher Palace and two to the Persepolis Museum. In a general view, these motifs can be seen in the Thatcher Palace on the north side of the west door of the south hall and also on the north side of the east door of the same (south) hall. Also, in this palace, on the lower part of the wall of the northern gate (East Jerez) in the middle hall, a sketch of a woman can be seen, which can be considered among the needle motifs of Greek art. In the Takht Jamshid Museum, two Graffiti engravings have been observed right in the main pillared hall of this place. It should be mentioned that this research was done based on documentary studies and field investigation. According to the documentation of the current research, it can be said that most of these motifs belong to the early Sassanid period and only two cases contain different art.