KLS
KLS means:
- Kal Star Aviation , an Indonesian airline (ICAO code)
- Kleine Levin syndrome , a rare neurological disease
- Kuala Lumpur Sentral Station, Kuala Lumpur's largest train station
- the electoral alliance of Communists and Left Socialists from the Communist Party of Austria and Left Socialists
- Košarkaška liga Srbije , 1st Serbian basketball league
- Cross sleeper track
- Circle of Liberal Social Democrats , union of SPD members
kls stands for:
- Kalasha (language) (ISO-639-3 code), Dardic language
