Seas of Blood is a single-player roleplaying gamebook written by Andrew Chapman, illustrated by Bob Harvey and originally published in 1985 by Puffin Books.

It forms part of Steve Jackson and Ian Livingstone's Fighting Fantasy series.

The title was loosely adapted into a text-based video game by company Adventure Soft.

The player takes the role of the captain of the pirate vessel Banshee, and within a 50-day period must overcome both land and sea adversaries to reach the isle of Nippur, in possession of more gold than rival Abdul the Butcher.

The book was loosely adapted into an Adventure Soft text adventure game Seas of Blood for the ZX Spectrum, Commodore 64, and Amstrad CPC.