Yoichi Hatta (八田 與一) was a Japanese engineer, known for his contributions in hydraulic engineering in the Japanese-ruled Taiwan. Hatta was born in Kanazawa, Ishikawa. After graduating from Tokyo Imperial University in 1910, he joined the Seat of Governor-General of Taiwan and served as a technician of the government. He was the designer of Chianan Canal and Wusanto Reservoir. He was killed on board the transport ship Taiyō Maru, when it was torpedoed and sunk on May 8, 1942 by US submarine Grenadier. In contemporary Taiwan, he is honored as a deity for his contributions to irrigation.