Halal industry has attracted global attention from business stakeholders from aroundthe world for its vast growth. The term of “halal‖ means ―permissible‖ or ―allowed‖. Halal refers to the whole procedure in any products, activities and businesses. There is an urge to have an understanding and implementation on halal concept. Halal industries nowadays not only refer to food and Islamic financial sectors but it also encompasses cosmetics, tourism, logistics, and so forth. This paper attempts to review the development of researches in halal industry, and the findings on halal certification and those three biggest industries in halal market