Mohammad Atta ( محمد عطا السيد (1 ga Satumba, 1968 - 11 ga Satumba, 2001) sanannen aboki ne na al-Qaeda kuma shugaban maharan goma sha tara da suka kai harin 11 ga Satumba, 2001 . Shi da kansa ya shiga fashin jirgin saman American Airlines Flight 11, jirgi na farko da ya faɗi cikin Cibiyar Kasuwanci ta Duniya yayin harin 11 ga Satumba, 2001. An ce shi ne 'mafi kyawun ɗan takarar harin. Richard Bernstein: On Path to the U.S. Skies, Plot Leader Met bin Laden. The New York Times, 2002-09-10 Yosri Fouda: Chilling message of the 9/11 plots. The Sunday Times, 2006-10-1