SLW or slw may refer to:
Aviation Saltillo Airport (IATA code), Mexico
Other uses Sialum language (ISO 639 code:slw) slw, a PowerPC logical shift operator Single-line working an emergency measure on railways to work in both directions over a single track
See also SLW Ranch, an historic ranch in Colorado, US EuroStar SLW, an Evektor SportStar aircraft variant