This research deals with the study of the Unconventional ways of Expressing Possession in Middle Egyptian, it also aims at clarifying the several ways that the Ancient Egyptian are used during that period to express possession, as well as How Egyptians overcome the lack of a verb corresponding to English verb of possessive have or its synonyms (possess, own). The Egyptian used simple possession such as direct and indirect genitive, personal pronouns, and possessive pronouns. Also, he used complex possession that some linguists call “sentences expressing possession", by means of important words, as well as the sentences of Adjectival and Adverbial Phrase expressing possession. This research deals with the description of the various types of constructions used for expressing possession in Middle Egyptian, both functional and structural features and compare it with the same types of constructions in Late Egyptian relying on both literary and non-literary texts.