Dr. Kotnis ki Amar Kahani (English: The eternal tale of Dr. Kotnis) is a 1946 Indian film in Hindustani as well as English, written by Khwaja Ahmad Abbas and directed by V.

The film is based on the life of Dwarkanath Kotnis, an Indian doctor who worked in China during the Japanese invasion in World War II.

The film was based on the story "And One Did Not Come Back" by Khwaja Ahmad Abbas, which is itself based on the heroic life of Dr. Dwarkanath Kotnis, played by V. Shantaram in the film.

Dr. Kotnis was sent to China during the Second World War to provide medical assistance to the troops fighting against the Japanese invasion in Yenan province.

While in China he met and courted a Chinese girl, Gou Qinglan.