Dissertation Title:  Dr. Abdul Karim Zidane Efforts In The Islamic Da'wa Service. University, College and Department: Arab Republic of Egypt/ Al-Azhar University / Faculty of Fundamentals of Religion Study Level: PHD (Doctor of Philosophy) Specialty:  Da'wa and Thought Researcher Name:  Hussein Abdel Awad Al - Dulaimi Supervisor Of The Dissertation:    Prof. Dr. Abdel- Qader Sayed Abdel-Raouf (Supervisor)    Prof. Dr. Muhammad Al-Sayed Radi Jibril (Co. Supervisor) Date Of Discussion Of The Dissertation:  Dhu Al-Hijjah 1431 AH Corresponding to November 2010 AD Members Of The Discussion And Judging Committee:    Prof. Dr. Abdel Qader Sayed Abdel Raouf (Supervisor)    Prof. Dr. Muhammad Al-Sayed Radi Jibril (Co-Supervisor)    Prof. Dr. Magdy Abdel Ghaffar (Internal Discussion)    Prof. Dr. Ahmed Rabie Ahmed Youssef (External Discussion) *The Dissertation contained six main chapters, which included the first chapter on the life of Dr. Abdel Karim Zidan. The second chapter included a reading of the advocacy effects of Dr. Abdul Karim Zidan. While the third chapter came to explain his efforts in introducing religions in the Qur’an and their impact on the service of the Islamic call. As for the fourth chapter, the researcher devoted it to talking about the efforts of Dr. Abdul Karim Zidan in explaining the pillars of the Islamic call. In the fifth chapter of the treatise, he spoke about his efforts in explaining the types of da’wah, its methods, means, sources, and obstacles. As for the sixth and final chapter, it was held by the researcher to clarify the efforts of Dr. Abdul Karim Zidan in explaining the morals of preachers. *The Resala Foundation Publishers printed and published this Thesis in a book entitled ( Faqiah Aldueat Alealaamat Eabdalkarim Zidan ).