CUG may refer to:

• Closed User Group, groups of GSM mobile telephone subscribers
• Genetic code for leucine
• China University of Geosciences (Beijing)
• China University of Geosciences (Wuhan)
• The Complete University Guide, a university league table compiler and student advice website

• Los Angeles, Chile
• Los Angeles Christmas Festival
• Los Angeles City Attorney
• Los Angeles City College
• Los Angeles City Controller
• Los Angeles City Council
• Los Angeles City Hall
• Los Angeles-class submarine
• Los Angeles Clippers
• Los Angeles Cobras
• Los Angeles Coliseum
• Los Angeles Community College District
• Los Angeles Convention Center
• Los Angeles County
• Los Angeles County Arboretum and Botanic Garden
• Los Angeles County Board of Supervisors
• Los Angeles County, CA
• Los Angeles County, California
• Los Angeles County Department of Public Works
• Los Angeles County District Attorney
• Los Angeles County Fire Department
• Los Angeles County Metropolitan Transportation Authority
• Los Angeles County MetroRail
• Los Angeles County Museum of Art
• Los Angeles County Public Library