Justus Georg Westphal (18 March 1824 – 9 November 1859) was a German astronomer and mathematician.
[1] He received his PhD at the University of Göttingen in 1852, his thesis being published as Evolutio readicum aequationum algebraicarum e ternis terminis constantium in series infinitas.
He was a student of the famous mathematician Carl Friedrich Gauss, who was also Director of Göttingen Observatory.
In 1854, Westphal was appointed as a lecturer, but by the time of Gauss's death in 1855, he had resigned from his astronomical duties and had been replaced by his colleague Ernst Friedrich Wilhelm Klinkerfues.
Westphal, who had suffered from poor health for much of his life, died on 9 November 1859 in Lüneburg.