Sigma Sigma Sigma (ΣΣΣ), also known as Tri Sigma, is a national American women’s sorority with membership of more than 100,000 members. Sigma Sigma Sigma is a member of the National Panhellenic Conference and hosts chapters on more than 110 college campuses and 89 alumnae chapters in communities all over the world.

In the 1890s, the State Female Normal School in Farmville, Virginia (now known as Longwood University) was the state’s first institution to open its doors to teacher education, at a time when higher education for women was a highly debated topic. Eight students (Margaret Batten, Louise Davis, Martha Trent Featherston, Isabella Merrick, Sallie Michie, Lelia Scott, Elizabeth Watkins, and Lucy Wright) formed a special bond while studying for their future teaching careers. Lelia Scott and Lucy Wright led the first meetings of their secret society, the S.S.S. Club, in 1897. On April 20, 1898, these women officially announced the founding of the Greek letter society known as Sigma Sigma Sigma.