Harriet Jacobs (1813 or 1815 – March 7, 1897) was an African-American abolitionist and writer whose autobiography, Incidents in the Life of a Slave Girl, published in 1861 under the pseudonym Linda Brent, is now considered an "American classic".

Born into slavery in Edenton, North Carolina, she was sexually harassed by her enslaver. When he threatened to sell her children if she did not submit to his desire, she hid in a tiny crawl space under the roof of her grandmother's house, so low she could not stand up in it. After staying there for seven years, she finally managed to escape to the free North, where she was reunited with her children Joseph and Louisa Matilda and her brother John S. Jacobs. She found work as a nanny and got into contact with abolitionist and feminist reformers. Even in New York City, her freedom was in danger until her employer was able to pay off her legal owner.

During and immediately after the American Civil War, she travelled to Union-occupied parts of the Confederate South together with her daughter, organizing help and founding two schools for fugitive and freed slaves.

Harriet Jacobs was born in 1813 in Edenton, North Carolina, to Delilah Horniblow, enslaved by the Horniblow family who owned a local tavern. Under the principle of partus sequitur ventrem, both Harriet and her brother John were enslaved at birth by the tavern keeper's family, as a mother's status was passed to her children. Still, according to the same principle, mother and children should have been free, because Molly Horniblow, Delilah's mother, had been freed by her white father, who also was her owner. But she had been kidnapped, and had no chance for legal protection because of her dark skin. Harriet and John's father was Elijah Knox, also enslaved, but enjoying some privileges due to his skill as an expert carpenter. He died in 1826.

While Harriet's mother and grandmother were known by their owner's family name of Horniblow, Harriet used the opportunity of the baptism of her children to register Jacobs as their family name. She and her brother John also used that name after having escaped from slavery. The baptism was conducted without the knowledge of Harriet's master, Norcom. Harriet was convinced that her father should have been called Jacobs because his father was Henry Jacobs, a free white man. After Harriet's mother died, her father married a free African American. The only child from that marriage, Harriet's half brother, was called Elijah after his father and always used Knox as his family name, which was the name of his father's enslaver.

When Jacobs was six years old, her mother died. She then lived with her owner, a daughter of the deceased tavern keeper, who taught her not only to sew, but also to read and write. Very few slaves were literate, although it was only in 1830 that North Carolina explicitly outlawed teaching slaves to read or write. Although Harriet's brother John succeeded in teaching himself to read, he still was not able to write when he escaped from slavery as a young adult.

In 1825, the owner of Harriet and John Jacobs died. She willed Harriet to her three-year-old niece Mary Matilda Norcom. Mary Matilda's father, the physician Dr. James Norcom (son-in-law of the deceased tavern keeper), became her de facto master. Most of the property, including her brother John, was inherited by the tavern keeper's widow. Dr. Norcom hired John, and the Jacobs siblings lived together in his household. Following the death of the widow, her slaves were sold at the New Year's Day auction, 1828. Among them were Harriet's brother John, her grandmother Molly Horniblow and Molly's son Mark. Being sold at public auction was a traumatic experience for twelve-year old John. Friends of hers bought Molly Horniblow and Mark with money Molly had been working hard to save over the many years of her servitude at the tavern. Afterwards Molly Horniblow was set free, and her own son Mark became her slave. Because of legal restrictions on manumission, Mark had to remain his mother's slave until in 1847 or 1848 she finally succeeded in freeing him. John Jacobs was bought by Dr. Norcom, thus he and his sister stayed together.

The same year, 1828, Molly Horniblow's youngest son, Joseph, tried to escape. He was caught, paraded in chains through Edenton, put into jail, and finally sold to New Orleans. The family later learned that he escaped again and reached New York. After that he was lost to the family. The Jacobs siblings, who, even as children, were talking about escaping to freedom, saw him as a hero. Both of them would later name their sons for him.