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Bíró is a Hungarian surname meaning "judge". Notable people with the name include:
- Anton Biró (born 1939), Romanian hockey player
- Borbala Biro (born 1957), Hungarian biologist and agricultural scientist
- Charles Biro (1911–1972), American comic book writer
- Gyula Bíró (1890–1961), Hungarian Olympic football player
- László Bíró (1899–1985), Hungarian-Argentine inventor; invented the ballpoint pen
- Lajos Bíró (1880–1948), Hungarian novelist, playwright, and screenwriter
- Melinda Bíró (born 2007), Hungarian tennis player
- Sari Biro (1912–1990), Hungarian pianist
- Val Biro (1921–2014), children's writer and artist
- Ferenc Puskás (1927–2006), Hungarian footballer (known as Ferenc Puskás Biró on Spanish documents)