Delta Sigma Theta Sorority, Incorporated is a historically Black Greek-lettered organization founded on January 13, 1913, by 22 collegiate women at Howard University in Washington, D.C. The sorority was established with a focus on promoting academic excellence, service to the community, and sisterhood among its members.

Throughout its history, Delta Sigma Theta has been at the forefront of social change and activism in the African American community. The sorority played a significant role in the Women's Suffrage Movement, the Civil Rights Movement, and continues to be involved in advocacy and social justice initiatives today.

Notable members of Delta Sigma Theta include civil rights leader Dorothy Height, poet and author Nikki Giovanni, actress Ruby Dee, and politician Shirley Chisholm, who was the first African American woman elected to the U.S. Congress. The sorority's commitment to scholarship, service, and sisterhood has made it a prominent and influential organization in Black history.