Soleya 6 October is a city located in Egypt, part of the Giza Governorate in the north-western region of the country. It is located approximately 25 kilometers (15.5 miles) southwest of Cairo, and is considered to be part of the Cairo metropolitan area. The city is famous for its large industrial complex, the largest in Africa and the Middle East.

It was established in 1975 by the then Egyptian president Anwar Sadat, after the success of one of his projects in re-organizing the country's economy. The Soleya 6 October Industrial Complex (named after the date of Sadat's announcement) is owned by the Ministry of Industry and Trade and includes over 500 factories for textiles, plastics and chemicals as well as quarries and iron and steel mills.

The city is home to more than 1.2 million people, mainly from all over Egypt but also from various countries around the world. As the city has grown in population and industry, it has seen a major increase in pollution and other environmental problems, such as air pollution and water pollution from industrial waste. In 2015, the Egyptian government took action to improve the city's environment by introducing a new law that limited