Riolo is a surname of Italian origin. It may refer to:
People Alessandro Riolo (b. 1978), Italian footballer David Riolo (b. 1972), Australian former rugby league footballer Vince Riolo (b. 1947), Maltese philosopher Vincenzo Riolo (1772–1837), Italian painter
Places Riolo Terme, an Italian municipality of the Province of Ravenna, Emilia-Romagna Riolos, a Greek village of West Achaea municipality, West Greece Pattiro Riolo, an Indonesian village in Sibulue district, Bone Regency, South Sulawesi
See also Riol, a German municipality in Rhineland-Palatinate Riola, a Spanish municipality in Valencian Community Rioli, a surname Rio (disambiguation) Ríos (disambiguation)