LSY

LSY or lsy may refer to:


 * Law Society of Yukon, the regulatory body for lawyers in the Yukon
 * Lismore Airport (IATA: LSY), a regional airport located in the Northern Rivers region of New South Wales, Australia
 * Lower Sydenham railway station (National Rail station code: LSY), a railway station in London, England
 * Mauritian Sign Language (ISO 639-3: lsy), the indigenous deaf sign language of Mauritius