Kéraban the Inflexible (French: Kéraban-le-têtu, 1883) is an adventure novel written by Jules Verne.

Jan van Mitten and his valet Bruno (both of Rotterdam, Holland) are in Istanbul, Turkey.

The pair are going to meet with Van Mitten's tobacco business associate, a headstrong man named Kéraban.

At Van Mitten's meeting, Kéraban decides to take them to dinner at his home in Scutari, on the other side of the Bosphorus Strait.

The principled Kéraban and his reluctant traveling companions begin the journey; the only deadline for Kéraban is that he must be back in six weeks time, so that he may depart in time to arrange for his nephew's wedding to a young woman, who must be married before she turns seventeen.