LRS may refer to:
Science and technology Lactated Ringer's solution, used for intravenous administration Learning Record Store, a data store system Linear recursive sequence, a recurrence relation used in mathematics Linear reference system, a method of spatial referencing along a line Limited Rate Support, a Wi-Fi mode; see IEEE 802.11g-2003
Organisations Levi, Ray & Shoup, a business consulting firm (Lithuanian Russian Union), a political party in Lithuania Liverpool Reform Synagogue, a Reform Jewish synagogue in Liverpool, England London River Services, a division of Transport for London Long-range surveillance, a unit of the United States Army
Other uses , a Venezuelan broadcasting law Leros Municipal Airport (IATA code), on an island of Greece Location Referencing System, used for state-owned roads in Pennsylvania, US LRS (TV station)