Sonar Kella, also Shonar Kella, is a 1971 mystery novel written by Bengali writer and filmmaker Satyajit Ray. In 1974, Ray directed a film adaption of the book, also named Sonar Kella, starring Soumitra Chatterjee, Santosh Dutta, Siddartha Chatterjee and Kushal Chakraborty. The movie was released in the United States as The Golden Fortress. It is the first film adaptation of Ray's famous sleuth Feluda and was followed by Joi Baba Felunath.

Satyajit Ray was an Indian director, screenwriter, documentary filmmaker, author, essayist, lyricist, magazine editor, illustrator, calligrapher, and composer. Ray is widely considered one of the greatest and most influential film directors in the history of cinema. He is celebrated for works including The Apu Trilogy (1955–1959), The Music Room (1958), The Big City (1963) and Charulata (1964) and the Goopy–Bagha trilogy.