Abu Ali al-Hasan al-Tusi Nizam al-Mulk (1018–1092), better known as Khwaja Nizam al-Mulk Tusi (Persian: خواجه نظام‌الملک طوسی‎ - Khwāğa Nizāmu l'Mulk al-Ṭusī) was a Persian scholar and vizier of the Seljuq Empire. He was also for a short time the sole ruler of the Seljuq Empire.

"Nizam al-Mulk" was an honorific which he assumed after achieving prominence. It translates into English as: "good order of the kingdom."

Born in Tus in Persia (modern Iran), and initially serving the Ghaznavid sultans, Nizam al-Mulk became chief administrator of the entire Khorasan province by 1059 C.E.

From 1063, he served the Seljuqs as vizier and remained in that position throughout the reigns of Alp Arslan (1063–1072) and Malik Shah I (1072–1092). He left a great impact on organization of the Seljuq governmental bodies and hence the title Nizam al-Mulk which translates as "the order of state". He was pivotal figure who bridged the political gap between both the Abbasids and the Seljuqs against their various rivals such as the Fatimids and the Buyids.

Ghazali (Arabic: غزالي‎‎) is an Arabic surname, it may refer to:

Barkat Ali Khan Mukarram Jah Asaf Jah VIII, Beyefendi (b. 6 October 1933 at the Hilafet Palace, Nice, France), less formally known as Mukarram Jah, has been the titular Nizam of Hyderabad since the death of his grandfather in 1967. His full official regnal title is His Exalted and Imperial Highness Rustam-i-Dauran, Arustu-i-Zaman, Wal Mamaluk, Asaf Jah VIII, Muzaffar ul-Mamaluk, Nizam ul-Mulk, Nizam ud-Daula, Nawab Mir Barakat ’Ali Khan Bahadur, Sipah Salar, Fatah Jang, Nizam of Hyderabad and Berar, Imperial Prince of the Ottoman Empire and Honorable Lieutenant-General.

Mukarram Jah was born to Azam Jah and Durru Shehvar and the grandson of Osman Ali Khan, the last reigning Nizam of Hyderabad state, and also the grandson of the last Ottoman Caliph, His Imperial Majesty Caliph ‘Abdu’l-Mijid II.

Jah was educated at The Doon School and then in England at Harrow School, Cambridge, the London School of Economics and Royal Military Academy Sandhurst.

Mukarram Jah enjoyed a close relationship with India's first Prime Minister Pandit Jawaharlal Nehru who reportedly wanted him to become his personal envoy or the country's ambassador, particularly to the Muslim countries. His two main palaces in Hyderabad - Chowmahalla and Falaknuma - have recently been restored and are accessible to the public, the former as a museum highlighting the Nizam era and the latter as a luxury hotel opened in February 2010 after renovating and restoring for about ten years (under lease to the Taj Group).