Turkan surname is an Indian last name. Turkan surname also indicates the caste of person. Turkan surname definition is A subcaste of Bahna so called because their forefathers are said to have been soldiers in the army of the king of Delhi.. People with Turkan surname can also be found in other south asian countries like Pakistan, Bangladesh, Nepal and Sri Lanka. Turkan 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.