LCN

LCN can refer to:

• Library of Congress Number. Accession number for the United States bibliotek.
• The London Centre for Nanotechnology, a nanotechnology research institute in London, England
• Load Classification Number, also known as the Pavement Classification Number, a measure of the bearing strength of an airport runway
• Logical channel number (also known as virtual channel in North America), channel numbers used on television sets to change channel
• La Cosa Nostra, the Italian mafia in the United States
• La Coka Nostra, a hiphop music group
• Le Canal Nouvelles, a television channel in Quebec, Canada
• Low copy number, a DNA profiling technique
• Local Communications Network