Lambda Sigma Upsilon Latino Fraternity, Inc. (ΛΣΥ) ("L-S-U" or "Upsilons") is an intercollegiate Latino oriented Greek lettered fraternity, founded on April 5, 1979 at Rutgers University–New Brunswick. Lambda Sigma Upsilon has 81 undergraduate chapters and 6 alumni chapters in universities and cities across the United States. The fraternity is a member of the North American Interfraternity Conference (NIC) and a member of the National Association of Latino Fraternal Organizations (NALFO).