Wolfgang Hugo Rheinhold (26 March 1853 – 2 October 1900) was a German sculptor best known for his Affe mit Schädel ("Ape with Skull").

When 21, Rheinhold sought success in the United States and became an import and export merchant, living in San Francisco (1874–1878), where he had the head office for his business, as well as in Hamburg, where he settled in 1879.

In 1886, he studied under the sculptors Ernst Herter and Max Kruse, before officially enrolling as a student at the Berlin Academy of Arts (1888–1892).

These include: a group of reading monks (Lesende Monche), a tribute to Alfred Nobel (Dynamite in the Service of Mankind), a bust of socialist leader August Bebel and his most famous piece Am Wege (1896) a marble of "an unfortunate young woman with a child at her breast".

[5] His last work, of serpentine deities in a fountain ("Brunnengrotte mit zwei Wassergottheiten"), was exhibited close to his death in 1900.