YKS may refer to: Aviation Waco YKS, two 1930s American biplane models Yakutsk Airport, Russia (by IATA code)
Other uses Yokukansan, a Chinese herbal medicine Chapman code for Yorkshire, England Yuk Keep Smile, an Indonesian TV series from 2013 to 2014.
See also YK (disambiguation)
See also Waco YKS, a range of American single-engine biplanes