Mary Baker McQuesten | |
|---|---|
 | |
| Born | Mary Jane Baker October 10, 1849 |
| Died | December 7, 1934 (aged 85) |
| Nationality | Canadian |
| Other names | M. B. McQuesten |
| Spouse | Isaac Baldwin McQuesten |
| Children | 7 including Thomas Baker McQuesten |
Mary Baker McQuesten (October 10, 1849 – December 7, 1934) was a Victorian-era Canadian letter writer and activist. She was the mother of politician Thomas McQuesten.