Majalisar Nicaea ta Biyu ita ce majalisa ta Kirista da aka yi a shekara ta 787 AD a birnin Nicaea, a ƙasar Turkiyya ta zamani. An kira majalisar ne domin ta magance matsalar amfani da sifofin addini, musamman gumaka wajen bauta. Majalisar ta bayyana cewa ba bautar gumaka ba ne, kuma ya halatta a yi amfani da su, muddin ba a bauta musu da kansu ba, a maimakon haka an yi amfani da su a matsayin kayan taimako don bauta. An ɗauki wannan shawarar a matsayin nasara ga masu kare yin amfani da gumaka a cikin coci, kuma ya taimaka wajen ƙarfafa wuraren da ake yin siffofi na addini a bautar Kirista.