Masallacin Ammar da Osman Ramju Sadick Islamic Center ( Chinese ko Wan Chai Masallaci ne a masallaci da kuma Musulunci cibiyar a Hong Kong, Jamhuriyar Jama'ar kasar Sin . Shi ne masallaci na uku a Hongkong. Asalin ginin masallacin aka gina shi a shekarar 1967. Asalin ginin masallacin ƙaramin masallaci ne daga gefen Maƙabartar da ke titin 7 Seymore. A shekarar 1978, an sake mayar da masallacin zuwa sabon wuri a titin Oi Kwan saboda gwamnati ta buƙaci filin don gina ramin Aberdeen. An sake buɗe sabon ginin masallacin a watan Satumba 1981. Masallacin an tsara shi ne ta hanyar mai zanawa Ramju Sadick. Masallacin yana da hawa takwas wanda ya ƙunshi zauren salla, gidan cin abinci na kasar Sin, gidan burodi, dakin shan magani, ajujuwa, dakin karatu da dakin karawa juna sani. Masallacin shi ne wurin da hedkwatar Amintattun ƙugiyoyin Asusun Islamicungiyar Islama na Hong Kong (babbar ƙungiyar addinin Islama a Hong Kong) da Youthungiyar Matasan Musulunci ta Hongkong.