Jan Fethke (26 February 1903 – 16 December 1980) was a German-Polish film director and, under the pen name Jean Forge, a successful author.
In 1921, aged 18, he penned his first novel, the German language Der ausgestopfte Papagei (The Stuffed Parrot).
His books were inventive, rich in ideas, and a witty representative of enjoyable light literature with a talent for psychological observation and a precise knowledge of effects.
His most successful films were Mutter Krausens Fahrt ins Glück (Mommy Krause's Trip into Happiness) and Jenseits der Straße (On the Far Side of the Street), for which he wrote the screenplay.
At Ufa, he also made the acquaintance of Fritz Lang, who later used his Mr. Tot novel for his last film, The Thousand Eyes of Dr. Mabuse (1960).