SLH may refer to:
- Cheboygan County Airport, Michigan, US, FAA code
- Small Luxury Hotels of the World, partners of Hyatt
- SLH Transport, Kingston, Ontario, Canada
- Stockton-Lindquist House, DeLand, Florida, US
- Lemniscate elliptic functions § Hyperbolic lemniscate functions
- Vanua Lava Airport, Vanuatu, IATA code
