Johann Georg Adam Forster (November 27, 1754 – January 10, 1794) was a naturalist, ethnologist, travel writer, journalist, and revolutionary. At an early age, he accompanied his father, Johann Reinhold Forster, on several scientific expeditions, including James Cook's second voyage to the Pacific. His report of that journey, A Voyage Round the World, contributed significantly to the ethnology of the people of Polynesia and remains a respected work.