Diu Island in the context of "Daman and Diu Lok Sabha constituency"

The Gulf of Khambhat (Gujarati: [kʰəmbʱat̪]), also known as the Gulf of Cambay, is a bay on the Arabian Sea coast of India, bordering the state of Gujarat, just north of Mumbai and the Diu Island. The Gulf of Khambhat is about 200 km (120 mi) long, about 20 km (12 mi) wide in the north and up to 70 km (43 mi) wide in the south. Major rivers draining Gujarat are the Narmada, Tapti, Mahi and the Sabarmati, that form estuaries in the gulf.

It divides the Kathiawar Peninsula from the south-eastern part of Gujarat.

Daman and Diu (English: /dəˈmɑːn...'diːuː/; Hindi: [d̪əmən...d̪iːʋ] ) was a union territory in northwestern India. With an area of 112 km (43 sq mi), it was the smallest administrative subdivision of India on the mainland. The territory comprised two districts, Daman and Diu Island, geographically separated by the Gulf of Khambat. The state of Gujarat and the Arabian Sea bordered the territory. A Portuguese colony since the 1500s, these territories were taken over by India with the Annexation of Goa in 1961. Daman and Diu were administered as part of the union territory of Goa, Daman and Diu between 1961 and 1987. After the Goa Opinion Poll, they became separate union territories. In 2019, a legislation was passed to merge the union territories of Daman and Diu with its neighbouring union territory, Dadra and Nagar Haveli, to form the new union territory of Dadra and Nagar Haveli and Daman and Diu with effect from 26 January 2020.

Diu district (/ˈdiːuː/) (formerly Distrito de Dio) is one of the three districts of the union territory of Dadra and Nagar Haveli and Daman and Diu of India. The district is made up of Diu Island and two small enclaves of Simbor and Gogola, at the border with the state of Gujarat. The district headquarters are at Diu Town. It is the ninth least populous district in the country (out of 640).

Diu (English: /'diːuː/, Hindi: [d̪iːʋ]), also known as Diu Town, is a medieval fortified town in Diu district in the union territory of Dadra and Nagar Haveli and Daman and Diu, India. Diu district is the tenth least populated district of India. The town of Diu lies at the eastern end of Diu Island and is known for its fortress and old Portuguese cathedral. It is a fishing town.

The city is one of the hundred Indian cities competing in a national-level competition to get funds under Narendra Modi's flagship Smart Cities Mission. Diu will be competing for one of the last 10 spots against 20 cities from across India. In April 2018, it was reported that the Diu Smart City has already become India's first city to run on 100 percent renewable energy during the daytime.