Babban Masallacin Dimashka, wanda kuma aka fi sani da Masallacin Umayyad ( Larabci : جامع بني أمية الكبير, transl. Ğām 'Banī' Umayyah al-Kabīr ), yana ɗaya daga cikin manya kuma tsaffin masallatai a duniya. Yana cikin ɗayan wurare mafi tsayi a cikin tsohon garin Damascus.Hakanan yana da mahimmanci sosai saboda tsarin ginin sa . Masallacin na ɗauke da hubbaren wanda aka ce yana ɗauke da kan John Baptist ( Yahya ), wanda aka karrama a matsayin annabi daga Musulmai da Kiristoci. An ce an sami kan ne a lokacin da ake hakar ginin masallacin. Kabarin Salahuddin yana tsaye a cikin wani ƙaramin lambun da ke hade da bangon arewacin masallacin. A cikin 2001, Paparoma John Paul II ya ziyarci masallacin, musamman don ziyarci kayan tarihin John Baptist. Wannan shi ne karo na farko da wani paparoma ya kai ziyara a wani masallaci. The Shrine with the head of St. John the Baptist John the Baptist (or Yahya)'s Shrine inside the Mosque The courtyard of the Mosque with the ancient Treasury (Beit al Mal)