The Kantuta Expeditions were two separate expeditions on balsa rafts led by the Czech explorer and adventurer Eduard Ingris.
The voyages were inspired by the Thor Heyerdahl's Kon-Tiki expeditions. The goal of the expeditions was to repeat the success of the Kon-Tiki and confirm Heyerdahl's thoughts about the migration of Peruvian people to Polynesia.
The first expedition, Kantuta I, took place in 1955/1956 and led to failure. In 1959 Ingris built a new balsa raft Kantuta II and tried to repeat the previous expedition. The second expedition was a success. Ingris was able to cross the Pacific Ocean on the balsa raft from Peru to Polynesia.