Shōgun is a 1975 historical novel by author James Clavell that chronicles the end of Japan’s Azuchi-Momoyama period (1568-1600) and the dawn of the Edo period (1603-1868). Loosely based on actual events and figures, Shōgun narrates how European interests and internal conflicts within Japan brought about the Shogunate restoration.

By 1980 six million copies of Shōgun had been sold worldwide. The novel has been adapted into two TV series (in 1980 and 2024), a stage production (Shōgun: The Musical).

Clavell was an officer in the Royal Artillery during World War II and was a prisoner of war at Changi Prison in Singapore from 1942 to 1945, an experience that formed the basis of his first novel King Rat. Despite this experience, he admired Japan and the Japanese people, and described Shogun as "passionately pro-Japanese."

The New York Times's Webster Schott wrote, "I can't remember when a novel has seized my mind like this one [...] It's almost impossible not to continue to read Shōgun once having opened it". In addition to becoming a best-seller, with more than six million copies of the novel in 14 hardcover and 38 paperback printings by 1980, Shōgun had great impact on westerners' knowledge of, and interest in, Japanese history and culture.