包括景教（元时称也里可温教）、天主教、基督教、东正教在内的历史上所有来华活动的基督宗教各派都先后涉足过内蒙古地区。
All of the Christianity which active in the history of China , including Nestorianism , Catholicism , Christianity and Orthodox Eastern Church had set foot in Inner Mongolia .
也里可温教