Ruy or RUY may refer to:
Arts and Entertainment Ruy, the Little Cid, Spanish animated television series Ruy Blas, a character in the eponymous tragic drama by Victor Hugo
People another form of Rui, a Portuguese male given name another form of the Spanish male given name Rodrigo Ruy Finch, geologist active in the 1930's Ruy López de Segura (1530-1580), Spanish chess player Ruy Ramos (born 1957), Japanese footballer Ruy (footballer) (born 1989), Brazilian footballer
Places Ruy, Isère, a commune in France Ruy, Iran, a city in Iran Ruy Special Town, a village in Iran Ruy Mountain, a mountain on the border of Bulgaria and Serbia
Transport Copán Ruinas Airport (IATA: RUY), an airport serving the town of Copán Ruinas in Honduras
Other uses Ruy Lopez, a chess opening named after the Spanish chess player