Karl Heineken (died 4 January 1830), also known as Carlos Heineken, was a German medical doctor and ornithologist. He lived on Madeira, a Portuguese island in Macaronesia, from 1826 until his death. He described the Trocaz pigeon, a Madeiran endemic bird species.^[1][2] He is commemorated in the scientific name of a subspecies of blackcap, Sylvia atricapilla heineken.