William Twigg-Smith (né Smith; November 2, 1883 – April 21, 1950) was a New Zealand-born painter, illustrator and musician, who lived most of his life in Hawaii. During World War I, he was one of the first artists to serve in the American Camouflage Corps. After the war, he worked full-time as an illustrator for the Hawaiian Sugar Planters Association. He also had solo shows, featuring his landscapes of the region. Several of his works are held by the Honolulu Museum of Art.