Ann Maria Jackson (1810–January 28, 1880) was an enslaved woman with nine children who ran away from her enslaver in November 1858, after two of her eldest children had been sold. Her husband became mentally ill and died in a poor house. After finding out that four more of her children were about to be sold, she gathered the seven children who were with her and traveled along the Underground Railroad for Canada. The Jacksons established new lives for themselves in Toronto. Her two eldest children later reunited with the family, and the youngest, Albert Jackson, became the first African American to work as a letter carrier in Toronto.