Delta Sigma Theta Sorority, Inc. is a prominent African American Greek-letter organization that was founded on January 13, 1913, at Howard University. The sorority was founded by 22 visionary women who sought to promote academic excellence, service to the community, and social activism.

Throughout its history, Delta Sigma Theta has been at the forefront of the fight for civil rights and social justice. The sorority played a significant role in the Women's Suffrage Movement, the Civil Rights Movement, and continues to advocate for issues such as voter registration, education, and economic empowerment within the African American community.

Delta Sigma Theta has a rich legacy of leadership and service, with members including renowned figures such as Shirley Chisholm, the first African American woman elected to Congress, and Barbara Jordan, the first African American woman elected to the Texas Senate.

The sorority's programs and initiatives focus on areas such as educational development, economic development, international awareness, physical and mental health, and political awareness and involvement. Delta Sigma Theta has over 250,000 members in chapters across the United States and abroad, making it one of the largest African American sororities in the world.

Overall, Delta Sigma Theta Sorority, Inc. has made significant contributions to Black history by empowering women, uplifting communities, and fighting for social change.