There are only a handful of academic studies on the life of Dr. Rashad Khalifa (d. 1990), who continues to have an impact in the religious field today. Rashad Khalifa’s works and views on religion have developed over time into an Islamic school of thought/movement. Understanding the 19th-century movement as a contemporary Islamic movement and Rashad Khalifa’s life, works, and ideas on religious issues is quite important in terms of the history of Islamic sects. In this context, the subject of this study is Rashad Khalifa ‘s life, works, and some of his religious views. Adopting a modernist understanding of religion, Rashad Khalifa ‘s ideas on religion constitute the data base of this study. The aim of this study is to systematically present the life, important works and some of the prominent views on religion of Rashad Khalifa, who is the founding leader of the 19th century movement and who caused wide debates in the Islamic world. The study utilizes qualitative research methodology, literature review and data collection. The works and studies of Rashad Khalifa and his followers, as well as the writings and researches about him, were analyzed in the context of the history of sects. The main conclusions reached in the research are as follows: When we examine the life of Rashad Khalifa, we see that he conducted research on the Qur’ān and discovered the mathematical 19 system, which he described as miraculous as a result of these researches. We observe that Rashad Khalifa ‘s religious views changed over time and that he adopted a Qur’ân-centered religious understanding. As a result of his views, Rashad Khalifa can be considered as one of the representatives of the Qur’âniyyun movement. Rashad Khalifa and his followers were completely opposed to hadith, sunnah and sectarian practices. They claimed that only the Qur’ān could be the source of religion. Rashad Khalifa asserted that the Qur’ān was miraculously decoded with the number 19. Rashad Khalifa, who was the person solving these codes, also announced that he was the messenger of the mîsâq at the time Rashad Khalifa ‘s claim of the mathematical 19 system has been subjected to intense objections and criticism in the Islamic world as a result of the fact that he sees only the Qur’ân as a religious source, declares himself as the messenger of mîsâk, and claims that the last two verses of Sûra al-Tawbah are not from the Qur’ân in the context of the 19 system.