مارشال محمد قسیم فهیم در سال ۱۹۵۷ (میلادی) در روستای اومرز در ولایت پنجشیر متولد شد و دورهٔ تعلیمات ابتدائی را در زادگاهش به پایان رساند و سپس جهت فراگیری تحصیلات بیشتر به کابل رفت و وارد دانشگاه کابل شد.
در دوران جنگ افغانستان و شوروی به عنوان یکی از همرزمان شهید احمد شاه مسعود، به عنوان معاون فرماندهٔ منطقهای و مدتی معاون کمیته سیاسی شورای نظار (جمعیت اسلامی افغانستان) و زمانی فرمانده جبهههای شمال (مزار شریف، کندوز، بغلان، تخار و بدخشان) و همچنان به عنوان فرمانده جبهههای پروان، خوست و فرنگ در بغلان و غوربند ایفای وظیفه نمودهاست. ازآغاز جنگ افغانستان و شوروی تا پیروزی مجاهدین، مارشال محمد قسیم فهیم در پست معاونت احمد شاه مسعود فعال بودهاست. بعد از انتقال حکومت در ۸ آوریل ۱۹۹۲ (میلادی) به عنوان وزیر امنیت ملی دولت اسلامی افغانستان موظف شد.
پس از شکست طالبان و تشکیل اداره موقت افغانستان قسیم فهیم در پست قبلی خود ابقا شد و از جنرال به مارشال ارتقاء رتبه یافت.
مارشال فهیم از آغاز ادارهٔ موقت دوبار مورد سؤقصد قرار گرفتهاست اما هر دو بار جان سالم بردهاست. وی متاهل و دارای چهار فرزند میباشد.
Field Marshal Mohammad Qasim Fahim (Persian: محمد قسيم فهيم; born 1957; also known as "Marshal Fahim Khan") is an Afghan military commander, politician and the First Vice President since November 2009. He was the Defense Minister of the Afghan Transitional Administration, beginning in 2002 and also served as Vice President from June 2002 to December 2004. Marshal Fahim was replaced by Abdul Rahim Wardak, who was appointed as defense minister by President Hamid Karzai on December 23, 2004 when the transitional administration gave way to a popularly-elected administration. Marshal Fahim is a member of Afghanistan's Tajik ethnic group. He is the recipient of the Ahmad Shah Baba Medal. He is fluent in Persian, Pashto and Arabic, but doesn't speak English and is described as semi-literate. He is affiliated with Jamiat Islami (Shura-e Nazar) party of Afghanistan.
Fahim was born in Omarz, Panjshir the son of Abdul Matin from the Panjshir Valley in Afghanistan. He is reported to have finished his studies in Islamic Sharia at an Arabic institute in Kabul in 1977.
Some sources have allegedly claimed that Fahim served as a member of the KHAD during the 1980s, although the most reports indicate that he has been fighting the communist rulers since the late 70s. He is said to have fled Afghanistan after the Communist coup of 1978, he became a refugee in Peshawar.
Reclaiming Kabul from the Taliban
On September 13, 2001, Fahim was confirmed as the defence minister of the Northern Alliance, succeeding Ahmad Shah Massoud and thereby the new leader of the forces of the Northern Alliance. Massoud, Afghanistan's most important resistance leader, had been assassinated two days earlier on September 9, 2001 by al-Qaeda operatives posing as journalists. Fahim was a close ally and protégé of Massoud. During the beginning of December 2001, with the crucial US military help, the opposition forces had captured as good as all of Afghanistan on the Taliban, and in Bonn there were new talks about the formation of an interim administration. Following the Bonn Conference in December 2001, Fahim said that a UN force should not exceed 1000 men and that they should play a very limited role in Afghan politics and that his own forces could eradicate sources of instability in the country.
Fahim wanted his own Northern Alliance forces to police Kabul, because, as Fahim stated, his troops in Kabul were security troops, not military.
He is a member of the leadership council of the United National Front, which is a coalition of top national and regional leaders. Other members include former President Professor Burhanuddin Rabbani, House Speaker Yunus Qanuni, Vice-President Ahmad Zia Massoud and others.
In June 2007, Marshal Fahim stated that his advisory role was merely symbolic and that he never had the chance to advise the President. He further said that after the 2004 elections President Karzai formed a "one-sided" cabinet and began to employ unilateralism as his main policy driver. Fahim argued that without the backing of foreign forces President Karzai's regime would not last longer than a week. (The Daily Times, Monday, June 4, 2007).
In 2009, he was one of Hamid Karzai's running mates in the presidential election.
The selection was condemned by Human Rights Watch.
When Karzai announced Marshal Fahim as his vice-president, many in Kabul alleged Marshal Fahim was at the time involved in criminal activities, including kidnapping for ransom: by choosing Fahim as his Vice-president, Karzai was said to have stained his own credibility even further.
In September 2010 it was reported by an Afghan news agency that Marshal Fahim had died of cancer in Paris, France.An official statement was later released by Fahim, who said: "I am completely healthy. I request the Afghan people not to trust news published by irresponsible websites".
He is a sponsor of the top Buzkashi player Aziz Ahmad.