• Lambda Delta Sigma (Concordia) : a sorority at Concordia College in Moorhead, Minnesota; founded in 1919
• Lambda Delta Sigma (LDS Church) : a sorority founded in 1960 for members of The Church of Jesus Christ of Latter-day Saints (LDS Church); now replaced with the LDS Student Association
  LDS Student Association
  LDS Student Association is an organization affiliated with The Church of Jesus Christ of Latter-day Saints which offers Latter-day Saint university and college students and others social, religious, and recreational activities.The LDSSA was established in 1960, and today a chapter of the LDSSA...
  
   at all universities except the University of Utah

See also

• Sigma Gamma Chi
  Sigma Gamma Chi
  Sigma Gamma Chi is the name of the fraternal organization sponsored by The Church of Jesus Christ of Latter-day Saints . Though it once was a national organization, it now only operates at the University of Utah.-History:...
  
  : an LDS Church fraternity founded in 1936 as Lambda Delta Sigma that spun off the LDS sorority of the same name