Khwaja Alimullah (1772–1854) was the first Nawab of Dhaka.
Alimullah (Bengali: আলীমুল্লাহ্), a Bengali masculine given name of Arabic origin, may also refer to:
- Mohammad Alimullah Miyan (1942–2017), founder of International University of Business Agriculture and Technology
- A. K. Mohammad Alim Ullah (born 1955), two-term member of parliament