| William Harker | |
| Nationality: | American |
| Occupation: | Slave trader |
| Years Active: | 1835–1859 |
| Known For: | Longevity in the slave trade |
William Harker was a 19th-century American slave trader, known for his extensive career spanning over two decades. Operating primarily in Maryland, Harker played a significant role in the domestic slave trade, actively engaging in the buying and selling of enslaved African Americans from 1835 to 1859. His longevity in the trade was notable during a time when many slave traders came and went.
Harker's operations were deeply embedded in the economic landscape of the Southern United States, reflecting the demand for enslaved labor and the profitability of the trade. As historian Frederic Bancroft noted in Slave Trading in the Old South (1931):
Harker maintained an office on South Calvert Street near the intersection with Baltimore Street in Baltimore, a strategic location that likely facilitated his trade activities.
Harker's notoriety extended beyond the trade itself. An 1852 newspaper advertisement he placed caught the attention of Harriet Beecher Stowe, who referenced it in her non-fiction work, A Key to Uncle Tom's Cabin. Stowe highlighted Harker's business practices, particularly his focus on the profitability of the Southern market: