Diaa Rashwan was born on 1 January 1960. Rashwan graduated from Cairo University in 1981 with a Bachelor's degree in political science, he also received a Master's degree in the same field from the Sorbonne University in 1985. Rashwan began his career in Al-Ahram Center for Political and Strategic Studies in early 80s as a researcher and has been an expert scholar over there since then and many years later in 2011 he became the Director of the Center. In March 2013 Rashwan was elected president of the Egyptian Press Syndicate.

In June 2017 Rashwan was appointed by President el-Sisi as Chairman of the State Information Service.

In March 15, 2019 Rashwan was elected for the 2nd time as president of the Egyptian Press Syndicate.