Sahibzada Mirza Khalil Ahmad was the son of Hazrat Mirza Bashiruddin Mahmud Ahmad (ra) and Hazrat Syeda Amatul Haye (ra). He was the paternal grandson of Hazrat Mirza Ghulam Ahmad (as), and maternal grandson of Hazrat Hakim Maulvi Nuruddin (ra).

Sahibzada Mirza Khalil Ahmad was born in December 1924, in Qadian. He got his religious education in Madrasa-e-Ahmadiyya. 

After the partition of the Indian subcontinent, he remained in Qadian for some time and served as Nazir Dawat-o-Tabligh. He also served as the Muntazim (organiser) of the first Jalsa Salana Qadian after the partition. 

He also served as the Naib Nazir Khidmat-e-Darweshan.

In 1964, he was married to Sahibzadi Tahira, daughter of Maulvi Abdul Baqi. 

Sahibzada Mirza Khalil Ahmad passed away on 4 March 1975.