Arthur Seidl (8 June 1863 – 11 April 1928) was a German writer, journalist, teacher at the Leipzig Conservatory and Dramaturg at the Hoftheater Dessau.

Arthur Seidl
Born	(1863-06-08)8 June 1863 Munich, Kingdom of Bavaria
Died	11 April 1928(1928-04-11) (aged 64) Dessau
Occupations	Writer Dramaturge Conservatory teacher
Organization	Anhaltisches Theater

Born in Munich, Seidl studied at the universities of Munich, Tübingen, Berlin and Leipzig, completing his studies with a doctor's degree. During his studies, he also learned to play cello and piano in Munich and Regensburg, and was interested in composition.

Seidl worked as a journalist for papers such as Deutsche Wacht [de], Die Moderne, Münchner Neueste Nachrichten and Neueste Hamburger Nachrichten. From 1898 to 1899 he was at the Nietzsche-Archiv in Weimar and won a reputation as a Wagner scholar. From 1903 he was dramaturge at the Hoftheater Dessau (Dessau court theatre), a position he held until his death. From 1904 he was also a lecturer at the Konservatorium Leipzig.