This paper describes Corporate Social Responsibility (CSR) of private sector in Egypt, and importance of applying Social Responsibility by Private sector in Egypt to help public sector to achieve Economic and Social objectives for Egyptian Community. So private Sector has an effective role in sustainable development. According to report of The Egyptian Ministry of Economic Development, Private sector plays an important role in these areas: Private Sector affects Economic Growth, Private Sector ’s contribution percentage in GDP is about 62% , Private Sector ’s contribution percentage in total investment in Egypt is about 65 % , Private Sector also plays important role in employing youth , according to statistics of 2018/2019 contribution percentage of private sector in employment is about 70% (15.5 million workers) ,this results in reducing unemployment rate from 10.3 % in 2018 to 8.4 % in 2019 , in addition private sector ’s role in building schools , universities , and hospitals …etc. all above indicate role of private sector to exercise social responsibility toward community that result in improving living standards of citizens , good health care , and facing unemployment problem in Egypt . any company exercise social responsibility can bring several benefits such as reduction in taxes are paid by this company and improving reputation of this company that results in attracting more investors. So, companies that exercise social responsibility benefit themselves and their society.