The Stoglav Synod (Russian: Стоглавый Собор), also translated as the Hundred Chapter Synod or Council of a Hundred Chapters, was a church council (sobor) held in Moscow in 1551, with the participation of Tsar Ivan IV, Metropolitan Macarius (presiding), other higher clergymen, and possibly representatives of the Boyar Duma. It convened in January and February 1551, with some final sessions as late as May of that year. Its decrees are known as the Stoglav.