| John Caven | |
| Office1: | Ontario MPP |
| Term Start1: | 1894 |
| Term End1: | 1898 |
| Predecessor1: | John Allison Sprague |
| Successor1: | William Ryerson Dempsey |
| Constituency1: | Prince Edward |
| Party: | Patrons of Industry |
| Birth Date: | 1833 |
| Birth Place: | Picton, Upper Canada |
| Death Place: | Prince Edward County, Ontario |
| Occupation: | Farmer |
John Caven (c. 1833 - April 8, 1898) was an Ontario farmer and political figure. He represented Prince Edward in the Legislative Assembly of Ontario as a Liberal-Patrons of Industry member from 1894 to 1898.
He was born in Picton and educated in Marysburgh. Caven served on the council for Prince Edward County and was a public school trustee.