Baqubah (Arabic: بَعْقُوبَة; BGN: Ba‘qūbah; also spelled Baquba and Baqouba) is the capital of Iraq's Diyala Governorate.

Baqubah was the main town in the Tarīq-i-Khurāsān district, and it was surrounded by fertile orchards that produced large crops of oranges and pomelos.

By the early 1870s, the Ottoman civil administration had managed to restore stability to the region, and Baqubah became increasingly prosperous.

[13] Around the turn of the century, one European traveler described its connections to emerging networks of world commerce: "The heart of the town is formed by a small bazaar with many fruits and vegetables, American coffee, Indian tea, French sugar and English textiles, in addition to the usual native products.

But the bazaar is surrounded by a wide district of expansive gardens with characteristic gate-cottages, and at the eastern exit from the town there is a large and handsome caravansary that is full of Shi'ite pilgrims almost throughout the year.

"During the course of the US-led occupation of Iraq, Baquba emerged as the scene of some of the heaviest guerrilla activity, along with the Sunni enclaves of Fallujah and Ramadi.

In a setback for insurgents, Iraqi and U.S. officials confirmed on June 7, 2006, that Zarqawi had been killed in an airstrike and subsequent raid 8 km (5.0 mi) north of Baquba.

In January 2007, it was reported that Sunni insurgents were able to kidnap the mayor and blow up his office, despite promises from American and Iraqi military officials that the situation in the city was "reassuring and under control".

Christopher Cash and Spec.4 Daniel Desens Jr, of A Co 1-120th INF BN, North Carolina National Guard, were killed in action during attacks by a large well-coordinated insurgent force attempting to take key points around the city.

There is also an Izzat Ibrahim mosque in Baqubah (and another one in its satellite town of Buhriz), named likewise after a high officer of Saddam Hussein.

These, like other Baath Party-related names, are controversial among Iraqi Shia and Kurds who lost so many lives to the abuses of the Ba'ath Party, Saddam Hussein and military/security figures like Adnan Khayrullah, Ali Hassan al-Majid and Izzat Ibrahim.