Sigma Kappa is a sorority founded in1874 at Colby College in Waterville, Maine. In 1959, Sigma Kappa and Pi Kappa Sigma merged, which created many of the Delta series chapters.
Following is a list of Sigma Kappa collegiate chapters, with active chapters indicated in bold and inactive chapters in italics.
Following is a list of Sigma Kappa alumnae chapters, with active chapters indicated in bold and inactive chapters in italics.