SLO, or Slo, may refer to:

Places San Luis Obispo, a city in the state of California, US San Luis Obispo County, a county in the state of California, US San Luis Obispo Coast / SLO Coast viticultural area in San Luis Obispo County, California, US Slovakia, UNDP country code Slovenia, IOC country code and vehicle registration code

Medicine Scanning laser ophthalmoscopy, an eye examination method Secondary lymphoid organ, for example a lymph node or spleen Streptolysin O, exotoxin produced by streptococci

Transport Salem–Leckrone Airport (IATA code), Illinois, US Slough railway station (National Rail code), in the county of Berkshire, UK SLO Transit, a provider of mass transportation in San Luis Obispo, California, US Solo Balapan railway station, a railway station in Indonesia (station code) Samalkot Junction railway station (station code), Andhra Pradesh, India

Other uses Service-level objective, of a customer agreement SLO, a music album by Jess Mills Student Learning Objectives, an assessment tool used by teachers Supporter liaison officer, of a sports club

See also