RLP
RLP may refer to:

Medicine and chemistry
2,3-diketo-5-methylthiopentyl-1-phosphate enolase, an enzyme
Regional limb perfusion, a method of medication delivery in animals.
Round Ligament Pain, a pain of the round ligament of uterus

Computing
Radio Link Protocol, an automatic repeat request fragmentation protocol used over a wireless (typically cellular) air interface
RLP (complexity), the complexity class of problems solvable by a probabilistic machine in logarithmic space and polynomial time with one-sided error

Other uses
Rashtriya Loktantrik Party, an independent political party in India.
Reel Life Productions, an independent record label founded by rapper Esham
Rhineland-Palatinate, a federal state of the Federal Republic of Germany
Riverside Long Playing, serial number for Riverside Records LP albums
Rohingya Liberation Party, Rakhine State, Myanmar