LRP
- LRP ration
- Lateralized readiness potential
- Layerwise Relevance Propagation
- Lead replacement petrol
- League for the Revolutionary Party
- Liberia Restoration Party
- Lipoprotein receptor-related protein
- Lithuanian Regions Party
- Live action role-playing game
- Living free-radical polymerization
- Lo Rat Penat
- Long Range Patrol (disambiguation)
- Lower riser package
- The Linux Router Project