Gentosha Inc. (株式会社幻冬舎, Kabushiki-gaisha Gentōsha) is a Japanese publisher, headquartered in Shibuya, Tokyo. Gentosha publishes manga magazine Comic Birz, Web comic magazines GENZO, SPICA, Comic MAGNA, literary magazines Lynx, papyrus, as well as business magazine GOETHE.

• GOETHE [jp], business magazine geared towards men.
• Papyrus, literary and cultural magazine.
• Comic Birz, monthly seinen manga magazine published by Gentosha Comics, a subsidiary of the company.
• GENZO, monthly seinen Web comic published by Gentosha Comics on the 28th of each month.
• SPICA, monthly shōjo Web comic published by Gentosha Comics.
• Comic MAGNA, monthly shōnen Web comic published by Gentosha Comics on the 28th of each month; it is free-of-charge.
• Lynx, bi-monthly literary magazine published by Gentosha Comics on the 9th of every odd month.

• Gentosha's website (in Japanese)
• Goethe magazine's website (in Japanese)
• papyrus magazine's website (in Japanese)
• Genzo Comic website