Jack Vincent MBE (6 March 1904 – 3 July 1999) was an English ornithologist.
At age 21 he moved to South Africa where he worked on two farms in the Richmond district of the Natal Province.
Most memorable was his travel to the Mount Namuli massif in Mozambique in 1932 where he discovered some bird taxa new to science including the Namuli apalis (Apalis lynesi) and the dapple-throat (Arcanator orostruthus).
During World War II he served as colonel with the Natal Carbineers in East and Northern Africa.
In 1949 Jack Vincent became corresponding member of the American Ornithologists' Union and the first director of the Natal Parks, Game and Fish Preservation Board (in short: Natal Parks Board), a body which played an important role in the conservation of the white rhinoceros in KwaZulu-Natal in the 1950s.