This thesis deals with the topic of "Burial Customs in Lower Egypt during the Fourth Millennium BC", and the proposed study aims to provide, at least partially, coverage of the existing gap, which is a lack of information on early burial customs in northern Egypt during the fourth millennium BC. This study also aims to organize multiple data revolving around burial customs in Lower Egypt in the scope of funerary architecture, methods of burying the deceased, and various secondary elements that appeared in some periods that were undoubtedly linked to burial customs. It also aims to identify the religious traditions of Lower Egyptian societies and trace their typical development in certain eras, as Lower Egypt in different periods of its history combined multiple different cultures, and there were many attempts to separate those ancient elements from the modern elements that left them, leading to what is called critical expansion, through the noticeable changes in burial customs.