Halal in Islam is a central concept, referring to any permissible to use e.g. thing, entity, object or action in accordance with Islamic principles & practices, because Islam has a unique consumption & dietary system different from other ethnic consumption & dietary systems so what Muslims can eat is defined in halal food regulations because there are ingredients of food and processes of preparation and both must be halal, therefore all the Muslims are required to ensure that their food comes from halal sources according to principles of Shariah both its ingredients & its whole preparation process. And now world community has recognized the importance of Muslims dietary & other consumption needs. Muslim consumers towards halal food products have more positive intention & attitude than non food products though halal concept is applicable to all products including food, pharmaceuticals, fashion, banking, insurance, entertainment and tourism. However what an overall concept encouraging, Muslims to seek & use goods & services is promoting ‘cleanliness’ in all the aspect of human life hence halal food is produced in a clean environment is of quality & safe to consume. Now the term halal has attracted attention and certified halal food and other products market is increasingly growing both internationally & domestically. Halal rules govern the tastes & preferences of Muslim consumers so where Muslim consumers exist, market for halal food also exists. Therefore Market for halal products is very fast growing market and is to the tune of trillion dollars. This paper encompasses the points i.e. what is halal? What is origin of halal food such as animal food or plants food? What is extent of halal products market in the world? Keywords: Halal, Food, Products, Markets, Consumption.