Bonython may refer to:

• Blanche Ada Bonython, née Bray (18??–1908), first wife of Lavington Bonython
• Charles Bonython (c.1653–1705), Member of Parliament for Westminster
• Chris Bonython (born 1947), Australian amateur golfer
• Constance Jean Bonython née Warren, Lady Bonython (1891–1977), second wife of (then) Sir Lavington Bonython
• Elizabeth Bonython, Lady Wilson (1907–2008)
• John Langdon Bonython (Sir Langdon Bonython, 1848–1939), Editor, philanthropist, Australian politician and journalist
• John Langdon Bonython (1905–1992), prominent South Australian businessman
• John Lavington Bonython (Sir Lavington Bonython, 1875–1960), Australian publisher and Lord Mayor of Adelaide
• Kym Bonython (Hugh Reskymer Bonython, 1920–2011), art-dealer, author, entrepreneur, Companion of the Order of Australia
• Richard Bonython, Colonel-General of the Saco Militia (1645–?)
• Warren Bonython (Charles Warren Bonython, 1916–2012), conservationist, explorer, author and chemical engineer

• Bonython Gallery, Adelaide
• Bonython Gallery, Sydney (Paddington)
• Bonython Hall, North Terrace, Adelaide, the Great Hall of the University of Adelaide
• Bonython Manor, an estate garden in Cornwall, England
• Bonython Park, the largest of the Adelaide Parklands
• Bonython, ACT, a suburb of Canberra
• Division of Bonython, an Australian Electoral Division in South Australia
• Eric Bonython Conservation Park, one of the protected areas of South Australia
• Mount Bonython, near Mount Lofty in the Adelaide Hills, and only 20m lower
• Port Bonython, at the head of Spencer Gulf, South Australia

• Bonython Professor of Law at the University of Adelaide