Leo (surname)
The surname Leo can refer to:
- Daniel Leo (born 1941), American organized crime figure
- Daniel Leo (born 1982), Samoan rugby player
- Friedrich Leo (1851 - 1914), German classical philologist
- Juliusz Leo (1861 - 1918), mayor of Kraków, Poland
- Leonardo Leo, composer
- Melissa Leo (born 1960), American actress
- Paul Leo (1893 - 1958), German Lutheran pastor and theologian