Zalmay Mamozy Khalilzad (Nastaliq: زلمی خلیلزاد - Zalmay Khalīlzād) (born: 22 March 1951) is a counselor at the Center for Strategic and International Studies (CSIS) and president of Khalilzad Associates. He was the United States Ambassador to the United Nations under President George W. Bush. He has been involved with U.S. policy makers at the White House since the early 1980s, and was the highest-ranking Muslim American in the Administration of U.S. President George W. Bush. Khalilzad's previous assignments in the Administration include U.S. Ambassador to Afghanistan and U.S. Ambassador to Iraq.

Zalmay Khalilzad was born in the city of Mazari Sharif in northern Afghanistan. Khalilzad's father (Khalilullah Khalilzad) was a government official under the monarchy of Mohammed Zahir Shah. He is an ethnic Pashtun, and his mother tongue is Persian (Dari). He also speaks English, Arabic and Pashto.

Khalilzad began his education at the public Ghazi Lycée school in Kabul. He first visited the United States as a Ceres, California high school exchange student with AFS Intercultural Programs. Later, he attained his bachelor's and master's degrees from the American University of Beirut in Lebanon. Khalilzad received his Ph.D at the University of Chicago, where he studied closely with strategic thinker Albert Wohlstetter, a prominent nuclear deterrence thinker and an opponent to the disarmament treaties, who provided Zalmay with contacts in the government and with RAND.