Kathiawar (kä´tēəwär´), peninsula, c.25,000 sq mi (64,750 sq km), W India, between the Gulf of Kachchh and the Gulf of Khambat. Almost all of Kathiawar is included in Gujarat state; a small area, Diu, is part of the union territory of Daman and Diu. The region, mostly level, produces much cotton and has stone quarries and cement and chemical industries. Agriculture is also important, the major crops being cotton, wheat, and millet. Bhavnagar is the chief port. Under British rule the region contained numerous princely states.