Ruan may refer to:
Buildings Ruan Center, office building in Des Moines, Iowa John Ruan House, historic mansion in Philadelphia, Pennsylvania
Places Ruan, County Clare, Ireland, a village and civil parish Ruan, Loiret, France, a small commune Mont Ruan, Switzerland, a mountain Ruan Major and Ruan Minor, two settlements in Cornwall, UK, forming part of the civil parish of Grade–Ruan Ruan Lanihorne, a civil parish and village in south Cornwall, England St Ruan, a hamlet in Cornwall, England
People Ruan Botha (born 1992), a South African rugby union player Ruan Renato (born 1994), Brazilian football player Ruan (footballer, born 1995), Brazilian football player, full name Ruan Gregório Teixeira Ruan (footballer, born 1998), Brazilian football player, full name Ruan Vinicius Silva de Jesus Ruan (footballer, born 2005), Brazilian football player, full name Ruan Pereira Duarte Ruan Pienaar (born 1984), a South African professional rugby union player Ruan (surname)
Other uses Ruan (instrument), a family of Chinese stringed instruments