Dina Powell, also known as Dina Powell McCormick (née Habib, Arabic: دينا حبيب; born June 12, 1973), is an Egyptian-American financial executive, philanthropist, and political advisor, best known for having been the United States Deputy National Security Advisor for Strategy to President Donald Trump.

Born in Cairo, Egypt, she came to the United States as a child. A lifelong member of the Republican Party, she became involved in Texas-oriented Republican politics during and following her time at the University of Texas at Austin. During the George W. Bush administration, Powell served in several roles, first as an Assistant to the President for Presidential Personnel and then as Assistant Secretary of State for Educational and Cultural Affairs and Deputy Undersecretary of State for Public Affairs and Public Diplomacy. In 2007, Powell joined Goldman Sachs, where she became a managing director and eventually a partner at the firm, as well as president of its non-profit subsidiary, the Goldman Sachs Foundation. In that capacity she ran the foundation's 10,000 Women program.

Powell joined the Trump administration during the transition period 2016/2017 and remained thereafter. As a Deputy National Security Advisor she had a role in determining the first year of the administration's foreign policy, especially in regard to Middle East policy. She was also an Assistant to the President and Senior Counselor for Economic Initiatives, a position – demanding about 20 percent of her time – that continued after her security appointment.

She left the administration in early 2018, returning to work for Goldman Sachs, where she was a Partner and served on the Management Committee. In October 2018, Powell was a leading candidate for the position of United States Ambassador to the United Nations, but withdrew from consideration and remained with the financial firm. In 2022 she was named the new chair of the Robin Hood Foundation, to begin in 2023. Powell departed Goldman Sachs in 2023 to join BDT & MSD Partners. Powell was a board member of Meta Platforms from April to December 2025, resigning without specifying a reason, before being named president and vice chair of the company in January 2026.

Dina Habib was born in Cairo, Egypt to a middle-class, Coptic Christian family. Her father was a captain in the Egyptian Army, and her mother had attended American University in Cairo. Her parents brought her younger sister and her to the United States as children. Habib arrived knowing no English.

The Habib family settled in Dallas, Texas, where they had relatives within the Coptic community. The parents ran a convenience store, and her father also worked at times as a bus driver and in real estate, while her mother sometimes pursued a career in social work. A third daughter was born once the family was in North America.

Habib learned English at school, but her family insisted that she be raised with Egyptian culture and language, hence, she is fluent in Arabic. Of her parents' actions, she later said, "I so desperately wanted a turkey and cheese sandwich with potato chips, and instead I always got grape leaves and hummus and falafel, not even in a cool brown paper bag. And now, of course, I appreciate so much that I did." Each of the family members born abroad became a naturalized citizen of the United States. She attended the prep school for girls Ursuline Academy of Dallas, from which she was graduated in 1991.

She then attended the University of Texas at Austin College of Liberal Arts where she enrolled in the Plan II Honors program. She performed community service as part of her program and joined the Delta Delta Delta sorority.