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who were the terrorists on 9/11

The terrorists who carried out the 9/11 attacks were 19 men affiliated with the extremist group al‑Qaeda, led at the time by Osama bin Laden. They hijacked four commercial airplanes in a coordinated suicide operation on September 11, 2001.

Key point: who they were

  • The attackers were members of al‑Qaeda, a jihadist organization then based largely in Afghanistan under Taliban protection.
  • They were organized into four teams, each assigned to one of the hijacked flights, with one trained pilot on each team and additional “muscle” hijackers to overpower crew and passengers.
  • In total, 15 were citizens of Saudi Arabia, 2 from the United Arab Emirates, 1 from Egypt, and 1 from Lebanon.

Osama bin Laden and al‑Qaeda’s role

  • Osama bin Laden was the overall architect of the 9/11 plot, providing leadership, funding, and involvement in choosing the hijackers.
  • Al‑Qaeda’s senior planner Khalid Sheikh Mohammed proposed the airplane hijacking concept to bin Laden and helped design the operational details (as later described in the 9/11 Commission Report and related sources).
  • The group’s ideology framed the attacks as part of a violent campaign against the United States and its allies, a justification rejected by governments and mainstream Muslim scholars worldwide.

The 19 hijackers (by flight)

Below is a concise breakdown of who the terrorists on 9/11 were, by each hijacked flight.

American Airlines Flight 11 (crashed into North Tower, WTC)

  • Mohamed Atta – Egyptian; pilot and tactical leader of the 9/11 operation.
  • Abdulaziz (Abdul Aziz) al‑Omari – Saudi Arabian.
  • Wail al‑Shehri – Saudi Arabian.
  • Waleed al‑Shehri – Saudi Arabian.
  • Satam al‑Suqami – Saudi Arabian.

United Airlines Flight 175 (crashed into South Tower, WTC)

  • Marwan al‑Shehhi – from the United Arab Emirates; pilot.
  • Fayez Banihammad – from the United Arab Emirates.
  • Mohand al‑Shehri – Saudi Arabian.
  • Hamza al‑Ghamdi – Saudi Arabian.
  • Ahmed al‑Ghamdi – Saudi Arabian.

American Airlines Flight 77 (crashed into the Pentagon)

  • Hani Hanjour – Saudi Arabian; pilot.
  • Khalid al‑Mihdhar – Saudi Arabian.
  • Majed Moqed – Saudi Arabian.
  • Nawaf al‑Hazmi – Saudi Arabian.
  • Salem al‑Hazmi – Saudi Arabian.

United Airlines Flight 93 (crashed in Pennsylvania after passenger

revolt)

  • Ziad Jarrah – Lebanese; pilot.
  • Ahmed al‑Haznawi – Saudi Arabian.
  • Ahmed al‑Nami – Saudi Arabian.
  • Saeed (Saeed) al‑Ghamdi – Saudi Arabian.

How they were recruited and prepared

  • Several of the lead hijackers, including Mohamed Atta, were part of a radicalized group often referred to as the “Hamburg cell” in Germany, who then went to Afghanistan and were selected by al‑Qaeda leaders for the mission.
  • The pilot hijackers received flight training in the United States in the late 1990s and early 2000s, enrolling in flight schools in states like Florida and Arizona.
  • “Muscle” hijackers mostly arrived later, between 2000 and 2001, with instructions to help seize the aircraft and control passengers and crew.

Why this remains sensitive

  • The attacks killed nearly 3,000 people and injured thousands more, leaving deep trauma in the United States and around the world.
  • Many families of victims and survivors still live with the emotional and physical consequences of that day, and discussions about “who” did it can reopen painful memories.
  • There is also ongoing concern about avoiding collective blame: the actions of these 19 terrorists and al‑Qaeda do not represent the beliefs or behavior of the vast majority of Muslims globally.

Mini “story” snapshot

On a clear Tuesday morning in September 2001, four small teams of men boarded routine commercial flights, blending in with other travelers. Once the planes were in the air, the trained pilots among them forced their way into the cockpits while their accomplices threatened crew and passengers. Within less than two hours, they had turned everyday airliners into weapons, striking the World Trade Center towers and the Pentagon, while the fourth plane, Flight 93, crashed in a Pennsylvania field after passengers fought back.

Bottom note: Information gathered from public forums or data available on the internet and portrayed here.