Alia surname is an Indian last name. Alia surname also indicates the caste of person. Alia surname definition is A grower of the al plant. A subcaste of Bania and Kachhi a synonym of Chasa.. People with Alia surname can also be found in other south asian countries like Pakistan, Bangladesh, Nepal and Sri Lanka. Alia surname definition is from a survey conducted during British rule in India. Many surnames in India indicate the type of work done by the person or by someone in family from whom the family inherited the surname. Surnames help spread casteism in India. One of the intellectuals suggested to drop surnames in India so that people can overcome caste differences easily.