Teito Monogatari (帝都物語, lit., The Tale of the Imperial Capital) is the debut novel of Japanese author Hiroshi Aramata. It began circulation in the literary magazine Monthly King Novel owned by Kadokawa Shoten in 1983, and was published in 10 volumes over the course of 1985–1987.
The novel is a romanticized retelling of the 20th-century history of Tokyo from an occultist perspective, and can be regarded as an epic work of historical fiction, dark fantasy and science fiction.
The work is widely recognized as the first mainstream novel to popularize onmyōdō and feng shui mythology in modern Japanese fiction. It was a bestseller with over 5 millions copies sold in Japan alone. It won the 1987 Nihon SF Taisho Award, inspired several adaptations as well as a long running literary franchise. Likewise its influence can still be felt in many later works.