Riho is both an Estonian masculine given name and a Japanese feminine given name. Notable people with the name include:
Estonia Riho Breivel (born 1952), Estonian politician Riho Kuld (born 1936), Estonian sculptor and rower Riho Lahi (1904–1995), Estonian writer Riho Päts (1899–1977), Estonian composer, choir director, music journalist and music teacher Riho Sibul (1958–2022), Estonian musician Riho Suun (born 1960), Estonian cyclist Riho Terras (born 1967), Estonian military commander Riho Terras (mathematician) (1939–2005), Estonian-American mathematician Riho Ühtegi (born 1964), Estonian brigadier general Riho Unt (born 1956), Estonian animated film director, scenarist, and artist Riho Västrik (born 1965), Estonian filmmaker, producer, screenwriter, journalist and historian
Japan , Japanese professional wrestler , Japanese former idol of the idol group SKE48 , Japanese singer and songwriter , Japanese ex-child model-turned-actress, voice actress and singer , Japanese actress , Japanese YouTuber , Japanese former synchronized swimmer , Japanese volleyball player , Japanese footballer , Japanese actress, singer and dancer , Japanese voice actress , Japanese actress and model , Japanese actress , Japanese actress