In addition, Mr. Tantawy has contributed his expertise to a wide range of public and private sector entities, including listed companies on the Egyptian Exchange and national development projects. He also previously served as a board member of several prominent institutions, such as the Egyptian Exchange and the Federation of Egyptian Banks, as well as a number of companies operating in real estate finance, urban development, tourism, infrastructure, investment, digital solutions, and industry. These include Al-Tameer for Real Estate Development (Al Oula), Misr Iran for Administrative and Tourism Facilities, Suez Canal for Technology Localization, Egyptians Abroad, Egyptians for Housing and Development, Al-Tameer Leasing Company (Al Oula), Delta Gas, and Stro Egypt.