Rys

Rys or RYS may refer to:
 * Ryś, Łódź Voivodeship, Poland
 * Rys (surname)

Sports

 * Royal Yacht Squadron, a British yacht club
 * HC Rys, a Russian hockey team

Vehicles

 * KTO Ryś, a Polish wheeled armored fighting vehicle
 * ORP Ryś, a Polish submarine
 * PZL.54 Ryś, a Polish heavy fighter aircraft
 * Ryś (locomotive), a narrow gauge 0-4-0T locomotive class built by Fablok

Other uses

 * rys, the ISO 639-3 code for Yaeyama language
 * RYS, the ICAO airline designator for Ryanair Sun
 * Registered Yoga School, see Yoga Alliance