Finnis is an English language surname. Notable people with this name include:Benjamin Finnis, British modern pentathlete Dorothy Kell Finnis (1903–1970), South Australian physiotherapist Edmund Finnis, British composer of classical and electronic music Frank Finnis (1851–1918), British Royal Navy admiral Henry Finnis (1890–1945), British officer in the Indian Army Horace Percy Finnis (1883–1960), Anglican clergyman and organist in South Australia John Finnis, Australian legal philosopher John Finnis (captain) "Captain Finnis" (1802–1872), seaman and overlander in South Australia Matt Finnis, chief executive officer of the St Kilda Football Club Michael Finnis, British materials scientist Rachel Finnis, aka Rachel Brown, footballer, married to Ian Finnis, pro golf caddie Valerie Finnis (1924–2006), British photographer, lecturer, teacher and gardener