Arthur Deetz (18 June 1826 – 16 July 1897) was a German stage actor and theatre director.
Two years later, he joined the Burgtheater, but soon he left the theatre to work in Leipzig, Weimar, Pest, Mannheim (1856-1860), Karlsruhe, Darmstadt, Dessau etc.
In 1864, Deetz took over the "Deutsche Oper" in Amsterdam, where he achieved artistic successes and performed Wagner and Gounod for the first time.
In this year, Deetz, who first appeared in the heroic fathers and rhetorical character roles, decided to become an actor.
He was buried at Cemetery I of the Jerusalem and New Church in front of the Hallesches Tor, where his wife had already found her final resting place.