Despite the great interest of Egyptologists in the ancient Egyptian Solar worship, and the number of studies devoted for that subject, not one provides information about the solar goddess Raettaui and her cult which survived until the Roman rule. Therefore, I felt it necessary to conduct a study on this particular goddess aiming to discover her history and cast light on the different aspects of her cult. The current study is composed of an introduction, three chapters, a conclusion, and an appendix of plates. Chapter one consists of four sections. The First section presents a chronological survey of Raettaui's scenes and monuments. Section two is a study of the temple scenes that depict Raettaui. This involves their location, their position in sequence of scenes, a brief description of the royal and divine figures in each of them, and a translation of their texts. The third section highlights Raettaui's other royal monuments. Section four deals with a wide range of private monuments bearing a scene of Raettaui or addressing her in their contexts. The second chapter contains a theological and architectural evaluation of the temple scenes involving Raettaui's depiction. Chapter three is concerned with the cult of Raettaui as revealed by her different monuments. It discusses the different writings of her name, her forms, her iconography, the different aspects of her character, and finally her cult centres, priests, and temples. In essence, this study may be regarded as highly effective in the sense of providing a thorough examination of Raettaui's accessible scenes and monuments involving her depiction. Consequently, it is quite clear the study has succeeded to a great extent in achieving its overall aim.