| Honorific-Prefix: | The Honourable |
| Oliver Blake | |
| Birth Date: | October 1, 1802 |
| Birth Place: | New Hampton, New Hampshire, U.S. |
| Party: | Liberal |
| Office: | Senator for Ontario, Ontario |
| Term Start: | October 23, 1867 |
| Term End: | December 10, 1873 |
| Appointed: | Royal Proclamation |
| Occupation: | Clerk |
Oliver Blake (October 1, 1802 - December 10, 1873) was an Ontario businessman and political figure. He was a Liberal member of the Senate of Canada from 1867 to 1873.
He was born in New Hampton, New Hampshire, United States in 1802 and came to Upper Canada while young. As a young man he sold fanning mills. Later, he was a director of the Beaver Mutual Fire Insurance Company. He was appointed court clerk in 1841; Deputy Reeve of Townsend Township in Norfolk County, Councillor of Townsend Township in 1853, and served as Reeve of Townsend Township in 1852, 1854 - 1857. Blake was elected to the Legislative Council of the Province of Canada for Thames division in 1862 and was named to the Senate after Confederation.