John Langdon Bonython
| The Honourable Sir John Langdon Bonython | |
|---|---|
| Member of the Australian Parliament for South Australia | |
| In office 30 March 1901 – 16 December 1903 Serving with Lee Batchelor, Paddy Glynn, Frederick Holder, Charles Kingston, Alexander Poynton and Vaiben Louis Solomon | |
| Member of the Australian Parliament for Barker | |
| In office 16 December 1903 – 8 November 1906 | |
| Preceded by | New seat | 
| Succeeded by | John Livingston | 
| Personal details | |
| Born | 15 October 1848 London, England | 
| Died | 22 October 1939 (aged 91) Adelaide, South Australia | 
| Nationality | Cornish Australian | 
| Political party | Protectionist Party | 
| Spouse(s) | Mary Louisa Fredericka, Lady Bonython (née Balthasar; m. 1870-1924; her death) | 
| Occupation | Journalist, philanthropist | 
Sir John Langdon Bonython KCMG (/bɒˈnaɪθən/; 15 October 1848 – 22 October 1939) was an Australian editor, newspaper proprietor, philanthropist, journalist and politician who served as a member of the inaugural federal Parliament, and was editor of the Adelaide daily morning broadsheet, The Advertiser, for 35 years.