Leo (surname)
The surname Leo may refer to:

Angelo Leo (born 1994), American boxer
Daniel Leo (mobster) (born 1928), American organized crime figure
Daniel Leo (rugby union) (born 1982), Samoan rugby player
Edoardo Leo (born 1972), Italian actor, director and screenwriter
Efraim Leo (born 1997), Swedish singer and songwriter
Friedrich Leo (1851–1914), German classical philologist
Henning Leo (1885–1953), Swedish politician
Juliusz Leo (1861–1918), Polish politician
Leo KoGuan (born 1955), Chinese American businessman
Leonard Leo (born 1965), American lawyer 
Leonardo Leo (1694–1744), Neapolitan composer
Matt Leo (born 1992), Australian-American football player
Melissa Leo (born 1960), American actress
Paul Leo (1893–1958), German Lutheran pastor and theologian
Ted Leo (born 1970), American musician
Titus Leo (born 1999), American football player

See also
Leo (given name)
Leos (disambiguation)

Surnames from nicknames
Latin-language surnames