Masallacin Hassan II ( Larabci: مسجد الحسن الثاني‎ ) yana cikin birnin Casablanca . Shi ne masallaci mafi girma a Morocco kuma masallaci na uku mafi girma a duniya bayan (i) Masjid al-Haram (Babban Masallacin) na Makka da (ii) Al-Masjid al-Nabawi (Masallacin Annabi) a Madina . Mai zane ɗan Faransa m Michel Pinseau ya zama shi. Bouygues ne ya gina shi., yana tsaye a kan gefen Atlantic, wanda za a iya gani ta gaske babban gilashi kasa da dakin 25,000 ibãda. 80arin 80,000 na iya dacewa a cikin harabar masallacin. Hasumayar sa ita ce mafi tsayi a duniya a 210 metres (689 ft)