| Honorific-Prefix: | Lieutenant-General |
| Zaheer-ul-Islam | |
| Native Name: | ﻇﻬﻴﺮﺍﻹﺳﻼﻡ |
| Honorific-Suffix: | HI (M) |
| Office1: | 20th Director General of the ISI |
| Term Start1: | 19 March 2012 |
| Term End1: | 7 November 2014 |
| Predecessor1: | Ahmad Shuja Pasha |
| Successor1: | Rizwan Akhtar |
| Office2: | Commander V Corps |
| Term Start2: | October 2010 |
| Term End2: | March 2012 |
| Office3: | Director General CT-Wing of the ISI |
| Term Start3: | 2008 |
| Term End3: | 2010 |
| Office4: | GOC 12th Infantry Division |
| Term Start4: | 2006 |
| Term End4: | 2008 |
| Office5: | Chief of Staff Army Strategic Forces Command |
| Term Start5: | 2004 |
| Term End5: | 2006 |
| Serviceyears: | 1977-? |
| Rank: | Lieutenant General |
| Unit: | Punjab Regiment |
| Awards: | Hilal-e-Imtiaz (Military) |
| Relatives: | Shah Nawaz Khan (uncle)Shah Rukh Khan (Cousin) |
Zaheer-ul-Islam HI (M), (Urdu: ﻇﻬﻴﺮ ﺍﻹﺳﻼﻡ) is a retired Lieutenant-General of the Pakistan Army who served as the 20th Director General of the ISI. He was appointed to the position on 9 March 2012 and began working a day after his predecessor Ahmed Shuja Pasha left on 18 March 2012.[1] At the time of his appointment, he was serving as the Corps Commander V Corps. In 2012 Forbes named him as the world's 52nd most powerful person.[2]
He was born into a Janjua Rajput family in Rawalpindi. His father retired as a brigadier in the Pakistan Army,[3] while his three brothers and his brother-in-law Major Ejaz Aziz also retired as military officers.[4]
His uncle was Shah Nawaz Khan, a major general in the Indian National Army of Subhas Chandra Bose.[5]
In 2012, it was alleged that Islam is related to Shah Rukh Khan. The Pakistan Army denied the allegations and said since Lateef Fatima, the mother of Khan, is the adopted daughter of Shah Nawaz Khan, Lateef and her son bare no blood relation to Islam.[6]
Zaheerul Islam was commissioned in the Punjab Regiment in the 55th PMA Long Course on 16 April 1977. He served as Corps Commander of the V Corps.
Zaheer served as the Director-General of the Counter-Terrorism Wing of the ISI before he was promoted to a lieutenant general and moved to Karachi as the Commander of the V Corps. He was the GOC of the 12th Division for some time before coming to the ISI. He also served as Chief of Staff Army Strategic Forces Command from 2004 to 2006.[7]
In 2020, the former Prime Minister of Pakistan Nawaz Sharif accused Zaheer-ul-Islam of seeking his resignation during the 2014 Azadi march.[8] Islam denied the allegations.