Najib ad-Dawlah,  also known as Najib Khan Yousafzai, is a Rohilla Yousafzai Pashtun who earlier served as a Mughal serviceman but later deserted the cause of the Mughals and joined Ahmed Shah Abdali in 1757 in his attack on Delhi.

He is also a tribal chief in eighteenth century Rohilkhand, who in the 1740s had founded the city of Najibabad in Bijnor district, India.

He had begun his career in 1743 as an immigrant from village Maneri, District Swabi Khyber Pakhtunkhwa as a soldier.

He was at first an employee of Imad ul mulk.

He deserts the cause of the Mughals and joins Ahmed Shah Abdali in 1757 in his attack on Delhi.

He is then appointed as Mir Bakshi of the Mughal emperor by Abdali.

Later in his career he was known as Najib ad-Dawlah, Amir al-Umra, Shuja ad-Dawlah.

From 1757 to 1770 he is governor of Saharanpur, ruling over Dehradun.

Many architectural relics of the period of Rohilla he oversees remain in Najibabad, which he foundsat the height of his career as a Mughal minister.