Angola •
Desidério Costa (born 1934), politician •
Hélder Costa (born 1994), footballer
Australia •
Frank Costa (1938–2021), businessman •
Joseph Costa (born 1992), footballer •
Marcello Costa (1940–2024), Italian-born medical researcher and public health advocate •
Michael Costa (born 1956), politician •
Phil Costa (born 1949), politician
Brazil •
Antônio da Costa Santos (1952–2001), architect and politician •
Carlos Duarte Costa (1888–1961), religious figure •
Celso Costa (born 1949), mathematician •
Delfim Moreira da Costa Ribeiro (1868–1920), president of Brazil from 1918 to 1919 •
Douglas Costa (born 1990), footballer •
Fábio Costa (born 1977), footballer •
Gal Costa (1945–2022), singer •
Haroldo Costa (1930–2025), actor •
Jair da Costa (1940–2025), footballer •
Larissa Costa (born 1984), model •
Ligia Maura Costa, professor •
Lúcio Costa (1902–1998), architect and urban planner •
Marcos Costa (born 1979), boxer •
Mariana Bridi da Costa (1988–2009), also known as Mari, model •
Newton da Costa (1929–2024), mathematician •
Renata Costa (born 1986), footballer • •
Paulo Costa (born 1991), mixed martial artist •
Petra Costa (born 1984), actress and filmmaker •
Rebecca da Costa (born 1984), actress and model •
Ronaldo da Costa (born 1970), long-distance runner •
Viviane Costa (born 1980), water polo player •
Yamandu Costa (born 1980), guitarist and composer
East Timor •
Maria do Céu Sarmento Pina da Costa (born 1968), politician •
Martinho da Costa Lopes (1918–1991), religious and political leader
France •
Emmanuel Da Costa (born 1977), French football player and manager •
Jean-Paul Costa (1941–2023), jurist •
Mélissa Da Costa (born 1990), French novelist •
Philippe Da Costa (born 1962), executive •
Stéphane Da Costa (born 1989), ice hockey player
Italy •
Aldo Costa (born 1961), Formula One engineer •
Alfredo Costa (1874–1913), opera singer •
Andrea Costa (1851–1910), politician •
Andrea Dalla Costa (born 1974), visual artist and filmmaker •
Elia Dalla Costa (1872–1961), cardinal •
Erminio Costa (1924–2009), neuroscientist •
Francesco Costa (1672–1740), painter •
Giovanni Costa (1826–1903), painter •
Lamberto Dalla Costa (1920–1982), bobsledder •
Lorenzo Costa (1460–1535), painter •
Marco Dalla Costa (born 1988), footballer •
Mariarosa Dalla Costa (born 1943), writer •
Nuccio Costa (1925–1991), television presenter •
Orazio Costa (1911–1999), theatre pedagogist and director •
Oronzio Gabriele Costa (1787–1867), zoologist •
Paolo Costa (born 1943), politician •
Silvia Costa (born 1949), politician
Portugal •
Adelino Amaro da Costa (1943–1980), politician •
Afonso Costa (1871–1937), prime minister of Portugal between 1913 and 1917 •
Alberto Costa (born 1947), politician •
Alfredo Bruto da Costa, (1938–2016), politician •
Alfredo Luís da Costa (1883–1908), one of the perpetrators of the 1908 Lisbon Regicide •
Alfredo Nobre da Costa, (1923–1996), prime minister of Portugal in 1978 •
António Costa (born 1961), current President of the European Council, prime minister of Portugal from 2015 to 2024 •
António Costa Silva (born 1952), economist •
António Félix da Costa (born 1991), racing driver •
António Luís Costa (born 1953), serial killer •
Beatriz Costa (1907–1996), actress •
Cândido Costa (born 1981), footballer •
Carlos da Silva Costa (born 1949), economist •
Carole Costa (born 1990), footballer •
Catarina Costa (born 1996), judoka •
Diogo Costa (born 1999), footballer •
Francisco da Costa Gomes (1914–2001), president of Portugal from 1974 to 1976 •
Francisco Fernandes Costa (1867–1925), politician •
Helena Costa (born 1978), football manager •
José Fonseca e Costa (1933–2015), film director •
Jorge Costa (1971–2025), football player and manager •
Jorge da Costa (1406–1508), cardinal •
Jorge Nuno Pinto da Costa (1937–2025), businessman, president of FC Porto from 1982 to 2024 •
José Costa (born 1953), football player and manager •
Manuel da Costa (1541–1604), Jesuit missionary •
Manuel Gomes da Costa (1863–1929), president of Portugal in 1926 •
Pedro Costa (born 1958), film director •
Ricardo Costa (born 1981), footballer •
Rui Costa (born 1972), footballer and sports executive •
Rui Costa (born 1986), cyclist •
Samú Costa (born 2000), footballer •
Susana Costa (born 1984), triple jumper •
Uriel da Costa (1585–1640), Sephardic Jew philosopher
Spain •
Albert Costa (born 1975), Catalan tennis player •
Albert Costa (born 1990), Catalan racing driver •
Carlos Costa (born 1968), Catalan tennis player •
Diego Costa (born 1988), Brazilian-born footballer •
Jaume Costa (born 1988), Valencian footballer •
Quim Costa (born 1957), Catalan basketball player •
Robert Costa (born 1994), Catalan footballer
Sri Lanka •
Asitha Costa (born 1970), cricketer •
Rex De Costa (1920–1971), medical doctor and army officer •
Wimal Kumara de Costa (1948–2016), actor
United States •
Catherine A. Costa (1926–2025), politician •
Dave Costa (1941–2013), American football player •
Dave Costa (born 1978), American football player (offensive lineman) •
Dino Costa, radio personality •
Don Costa (1925–1983), pop music arranger and record producer •
Jason Costa (born 1972), drummer •
Jay Costa (born 1957), politician •
Jeralita Costa (born 1959), politician •
Jim Costa (born 1952), politician •
Johnny Costa (1922–1996), jazz pianist •
Joseph Costa (1909–1998), Portuguese-born aviator •
Mary Costa (born 1930), actress and singer •
Matt Costa (born 1982), singer-songwriter •
Nikka Costa (born 1972), singer •
Robert Costa (born 1985), journalist •
Robert A. Costa (born 1958), politician •
Tony Costa (1944–1974), American serial killer •
John Costa (born 2009), Basketball player
United Kingdom •
Alberto Costa (born 1971), English politician •
Antony Costa (born 1981), English singer •
Benjamin Mendes da Costa (1803–1968), English merchant and philanthropist •
Catherine da Costa (1679–1756), English miniaturist •
Emanuel Mendes da Costa (1717–1791), English botanist, naturalist and philosopher •
Kitty da Costa (1710–1747), English Sephardic Jew •
Margaret Costa (1917–1999), food writer •
Michael Costa (1808–1884), Italian-born composer and conductor •
Sam Costa (1910–1981), English singer and entertainer
Other countries •
Alberto "Tino" Costa (born 1985), Argentinian footballer •
Alberto Zalamea Costa (1929–2011), Colombian journalist and diplomat •
Beatriz da Costa (1974–2012), German artist •
Gaspar da Costa (born 1749),
Tenente geral (lieutenant general) of the
Portuguese-speaking
Topasses •
George Da Costa (1853–1929), Nigerian photographer •
Isaac da Costa (1798–1860), Dutch Jewish writer •
Jean-Luc Costa (born 1965), Swiss chess player •
Leonardo Costa (born 2008), German chess player •
Manuel da Costa (born 1984), French-born Moroccan footballer •
Manuel Pinto da Costa, president of
São Tomé and Príncipe from 1975 to 1991 •
Moses Costa (1950–2020), Bangladeshi Roman Catholic prelate •
Seiya Da Costa Lay (born 2001), Indonesian footballer •
Silvia Costa (born 1964), Cuban high jumper •
Troy Costa (born 1975), Indian fashion designer ==Fictional characters==