Delta Sigma Sorority, a collegiate sorority founded in 1895 at Tufts University and later absorbed by Alpha Omicron Pi
Delta Air Lines | Delta State | Sigma Chi | Delta Goodrem | Sigma Xi | Sigma Alpha Epsilon | Delta | delta | Niger Delta | Delta Sigma Theta | Delta Force | Phi Delta Theta | Pearl River Delta | River delta | Delta Kappa Epsilon | river delta | Alpha Delta Phi | Phi Beta Sigma | Dirac delta function | Delta Connection | Danube Delta | Sigma Corporation | Sigma Alpha Mu | Sigma Phi Epsilon | Sigma | Mississippi Delta | Kappa Sigma | Kappa Delta Rho | Delta Upsilon | Delta Spirit |