Lyonel is a given name. Notable people with the name include:
Lyonel Power (c. 1375-1445), English composer Sir Lyonel Tollemache, 4th Baronet (1854-1952), English landowner Lyonel Hildyard (1861-1931), English cricketer Lyonel Feininger (1871-1956), German-American painter and caricaturist Lyonel Makzume, (1923-1995), Turkish businessman and top taxpayer Lyonel Thomas Senter Jr. (1933-2011), United States federal judge Lyonel Laurenceau (born 1942), Haitian painter Lyonel Trouillot (born 1956), Haitian novelist and poet Lyonel Grant (born 1957), Maori master carver and sculptor