- William Wilberforce: British politician and abolitionist, who led the campaign to abolish the transatlantic slave trade in 1807.
- Thomas Clarkson: British abolitionist, who worked with Wilberforce to raise awareness of the horrors of the slave trade and gather evidence of its cruelties.
- Elizabeth Heyrick: British Quaker abolitionist, who helped found the Female Anti-Slavery society and worked to educate the public about the horrors of slavery.
- Frederick Douglass: African American abolitionist, orator, and statesman, who escaped slavery and became one of the most prominent leaders of the abolitionist movement.
- Harriet Tubman: African American abolitionist and activist, who escaped slavery and made 13 trips back to the South to free more than 300 people through the Underground Railroad.
- John Brown: American abolitionist and activist, who led a small band of followers in an armed raid on the federal armory at Harpers Ferry, Virginia, in 1859, in an attempt to spark a slave rebellion.
- Sojourner Truth: African American abolitionist and women's rights activist, who escaped slavery and became a powerful orator and advocate for women's suffrage.
- William Lloyd Garrison: American abolitionist and journalist, who founded the influential abolitionist newspaper *The Liberator* in 1831 and called for the immediate emancipation of all enslaved people.
- Wendell Phillips: American abolitionist and orator, who became known as the "Golden Trumpet of Abolitionism" for his powerful speeches against slavery.
- Charles Sumner: American abolitionist and politician, who served as senator from Massachusetts and became a leading voice against slavery in the Senate.
This is by no means an exhaustive list, as there were countless individuals who worked and fought to end slavery. The abolitionist movement was a complex and diverse movement that involved people of various backgrounds, including religious leaders, politicians, activists, and formerly enslaved people who contributed their efforts and sacrifices to the cause of ending slavery.