| John Zylinski | |
| Birth Name: | Jan Andrezej Zylinski |
| Birth Date: | 25 July 1951 |
| Birth Place: | Lewisham, London, England |
| Alma Mater: | |
John Zylinski (25 July 1951 – 3 January 2024) was a Polish property developer living in United Kingdom who was a prince from a line of Polish aristocracy but grew up in the émigré community in London after the Second World War. His early career was in art journalism and he established an art business. He then became a property developer, specialising in fixer-uppers, and made a fortune. He then used his wealth to sponsor Polish causes, recreating a Polish palace in Ealing, founding the charity Polish Heroes and a political party, Duma Polska.
In 2016, Zylinski ran for the office of London mayor as an Independent, appearing on the ballot paper as "Prince Zylinski".