Sotion of Alexandria was a historian active in the 2nd–3rd century CE. He remains an obscure figure, with no biographical details recorded in major reference works. The common name Sotion makes definitive identification with other known individuals impossible.

He is credited with a doxographical history titled On the Succession of the Philosophers, which is now lost. The Suda attributes a 13-book work of this name to him. Significant scholarly confusion exists, however, as a more prominent Sotion of Alexandria from the 2nd century BCE wrote a work with the same title. It is possible the later Sotion produced a revised version or that the attribution reflects a different individual.

If correctly attributed, his work would place him within the tradition of ancient philosophical historiography that organized teachings by schools and their successive leaders. Such succession literature was used by later biographers like Diogenes Laertius. His impact remains difficult to assess due to the loss of his text and the confusion with his earlier namesake.