Giulio Magli (born 1964, Rome) is an Italian astrophysicist and archaeo-astronomer working primarily on the relationship between the architecture of ancient cultures and the sky.

He was the first to find the general exact solution of the Einstein field equations for spherically symmetric spacetimes with tangential stresses and, together with R. Giambo', F. Giannoni and P. Piccione, to investigate the nature of the final state for these gravitational collapse models.

In this context Magli proposed an inverse chronology between the two main pyramids of Giza as a consequence of the astronomical data, a theory which - thanks to Juan Belmonte of the IAC - developed in the idea, sustained today by both authors, that the project of the two was conceived together by Khufu in order to actualize his Akhet, symbolic horizon.

Magli has also investigated the meaning of the Inca citadel of Machu Picchu, proposing that it was a pilgrimage center conceived in pair with that of the Island of the Sun on the Titicaca Lake.

[6] His researches have been frequently reported in press and media releases,[7] and have been the subjects of two CNN documentaries of the "Revealer" series.