Bíró is a Hungarian surname meaning "judge". Notable people with the name include:
Andrew Biro (born 1969), Canadian academic Anton Biró (born 1939), Romanian hockey player Borbala Biro (born 1957), Hungarian biologist and agricultural scientist Boubacar Biro Diallo (1922–2025), Guinean politician Brandon Biro (born 1998), Canadian hockey player Charles Biro (1911–1972), American comic book writer Daniel Biro (born 1963), English musician and composer Dora Biro, American researcher Guilherme Biro, multiple people Gyula Bíró (1890–1961), Hungarian Olympic footballer István Biró (born 1951), Serbian politician Katalin Bíró-Sey (1934–2022), Hungarian numismatist 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 Norbert Bíró (born 1974), Hungarian Paralympic judoka Péter Bíró, multiple people Peter Paul Biro (1954–2024), Canadian art analyst Sámuel Bíró de Homoródszentmárton (1665–1721), Transylvanian politician Sari Biro (1912–1990), Hungarian pianist Štefan Biró (1913–1954), Slovak footballer Szabolcs Bíró (born 1969), Hungarian footballer Val Biro (1921–2014), children's writer and artist Ferenc Puskás (1927–2006), Hungarian footballer (known as Ferenc Puskás Biró on Spanish documents)