Ghazipur is a southeastern Uttar Pradesh state, northern India. It is located on the Ganges (Ganga) River northeast of Varanasi (Benares). Its ancient name of Gadhipur was changed to Ghazipur about 1330, reputedly in honour of GhÄzÄ« Malik, a Muslim ruler of the Tughluq dynasty. The town was a strategically important river port under the British, whose former cantonment now contains a college, a church, a bazaar, and the mausoleum of Lord Cornwallis, the British governor-general of India when he died there in 1805.
Ghazipur is famous for its opium factory, which is the largest legal opium factory in the world started by British East India Company in 1820. It's also home to handloom weaving and a perfume industry. The town is an important agricultural market.