Klas or KLAS may refer to:
*
Klas (restaurant), a Czech restaurant in Cicero, Illinois, which operated from 1922 to 2016
*
KLAS-TV, a television station (channel 8 analog/7 digital) licensed to Las Vegas, Nevada, United States
* The ICAO airport code for
Harry Reid International Airport, in Las Vegas, Nevada, United States
*
Kumon Leysin Academy of Switzerland, a private high school in Leysin, Switzerland
*
Claes, a given name in Scandinavia
*
Eri Klas (1939–2016), Estonian conductor
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