Masallacin Shah (Farisanci: مسجد شاه) masallaci ne da ke Isfahan, Iran. Tana gefen kudu na Naghsh-e Jahan Square. An gina shi a lokacin daular Safavid a ƙarƙashin umarnin Shah Abbas I na Farisa. An dauke ta a matsayin daya daga cikin fitattun gine -ginen Farisa a zamanin Musulunci. An yi wa Masallacin Masarautar rajista, tare da Dandalin Naghsh-e Jahan, a matsayin Cibiyar Tarihin Duniya ta UNESCO. Gininsa ya fara ne a shekara ta 1611, kuma kyawunsa yafi yawa saboda kyawun fale-falensa mai launi bakwai da rubuce-rubucen kiraigraphic. Masallacin ana misalta shi a bayan takardar kudin Iran rial 20,000. A shekara ta 1598, lokacin da Shah Abbas ya yanke shawarar kaura babban birnin daular Farisa daga garin Qazvin da ke arewa maso yammacin kasar zuwa tsakiyar birnin Isfahan, ya fara abin da zai zama daya daga cikin manyan shirye -shirye a tarihin Farisa; cikakken sake fasalin wannan tsohon birni.