LLN

LLN may refer to:

• Law of large numbers, a theorem in probability and statistics
• Les Légions Noires, a group of French black metal bands
• Louvain-la-Neuve, a university city and campus of the University of Louvain, in Belgium
• Loudlabs News, a stringer company featured on Netflix's Shot in the Dark
• Lower limit of normal, the low limit of a reference range