Buildings

• Ruan Center, an office building located in Des Moines, Iowa
• John Ruan House, a historic mansion located in Philadelphia, Pennsylvania

Places

• Ruan, County Clare, Ireland, is a village and a civil parish
• Ruan, Loiret, France, is a small commune
• Mont Ruan, Switzerland, is a mountain
• Ruan Major and Ruan Minor are two settlements in Cornwall, UK, and are part of the civil parish of Grade–Ruan
• Ruan Lanihorne is a civil parish and village located in southern Cornwall, England
• St Ruan is a hamlet located in Cornwall, England

People

• Ruan Botha (born in 1992) is a South African rugby player.
• Ruan Renato (born in 1994) is a Brazilian football player.
• Ruan (born in 1995), a Brazilian football player, whose full name is Ruan Gregório Teixeira.
• Ruan (born in 1998), a Brazilian football player, whose full name is Ruan Vinicius Silva de Jesus.
• Ruan (born in 2005), a Brazilian football player, whose full name is Ruan Pereira Duarte.
• Ruan Pienaar (born in 1984) is a South African professional rugby player.
• Ruan is also a surname.