Philipp Franz von Walther (3 January 1782 – 29 December 1849) was a German surgeon and ophthalmologist.

He studied medicine in Vienna under Georg Joseph Beer and Johann Peter Frank, obtaining his medical doctorate in 1803 from the University of Landshut.

He subsequently served as a professor at the Universities of Bamberg, Landshut, Bonn (1818–1830), and Munich.

In the treatise Ueber die Hornhautflecken, he gave an early account of corneal opacity.

Walther is credited with performing numerous experiments involving medical galvanism.