ROI

• Adenes Le Roi
• Alice Roi
• Antoine Rigaudeau
• Cephalopholis argus
• Cú Roí
• El Roi
• Interest
• Last Splash
• Qin Fen
• Reactive oxygen intermediate
• Region of interest
• Release of Information
• Republic of India
• Republic of Indonesia
• Republic of Iraq
• Republic of Ireland
• Return on investment
• Risk of infection
• Ro'i
• Rock of Israel
• Roi (song)
• Roi George Partridge
• Roi Kahat
• Roi Klein
• Roi Kwabena
• Roi Méndez
• Roi Wilson
• Roi-Namur
• Rovaniemi Airport
• Roy (disambiguation)
• Royal Institute of Oil Painters
• Rói Patursson
• USS Roi (CVE-103)