LRR

LRR may refer to:

• Laminated root rot, a root disease in conifers
• Leucine-rich repeat, a type of protein domain
• LoadingReadyRun, a Canadian comedy troupe
• Long Range Radar
• Long River Review, a literary magazine of the University of Connecticut
• Low rolling resistance tires, a type of tires designed for fuel efficiency
• Light Reaction Regiment, the Philippine Army counter-terrorist unit modeled after the U.S. Army Delta Force and British SAS
• Loose Round Robin, Warp Scheduling