John Hawkins' three voyages to Guinea were anomalous in respect of the first eight decades of English commercial voyaging to Guinea (1550s-1630s), in that they were slaving voyages and hence proceeded to America. His third voyage of 1567-1569 was the most ambitious and, partly because it ended in disaster, the best recorded. This edition analyses the Guinea section of the voyage by drawing on English, Portuguese and Spanish sources. Two notable features are an attack on a Portuguese shipping base in River Cacheu, an episode concealed in the account published at the time, and the mercenary assistance lent to one side in an African civil war in Sierra Leone. The evidence for each Guinea episode, much of it previously unpublished, is presented with a commentary.