This article is devoted to the study of the well-known obelisk of Antinous standing on the Pincian Hill in Rome. A newly constructed interpretation of the key passages of the hieroglyphic inscriptions is introduced. A newly-made sequence of obelisk faces’ is used; corrections to N.-C. Grenier’s copy are proposed. Special attention is given to the description of four reliefs decorating the upper part of the monument, observation of the damaged fragments, and their possible reconstruction.