Delta Sigma Theta Sorority, Inc. is a historically Black Greek-letter organization founded on January 13, 1913, at Howard University. It was founded by 22 visionary women who sought to promote academic excellence, service to the community, and sisterhood.

Throughout its history, Delta Sigma Theta has been at the forefront of social and political activism, advocating for racial equality, women's rights, and civil rights. The sorority played a significant role in the Civil Rights Movement, with members such as Dorothy Height, Fannie Lou Hamer, and Shirley Chisholm being key figures in the fight for justice and equality.

Delta Sigma Theta is known for its commitment to public service and has established numerous programs and initiatives to address issues such as education, healthcare, and economic empowerment in African American communities. The sorority's Five-Point Programmatic Thrust focuses on economic development, educational development, international awareness and involvement, physical and mental health, and political awareness and involvement.

Today, Delta Sigma Theta has over 1,000 chapters worldwide and continues to make a positive impact on society through its service projects, advocacy work, and commitment to uplifting Black communities.