Drama, film and television •
Gustavo Alatriste, Mexican actor, director, and producer of films, married to Silvia Pinal •
Gustavo Aguerre (born 1953), Argentine artist, curator, writer, and theatre designer •
Gustavo Monje (born 1971), Argentine stage actor and director •
Gustavo Sorola, American actor, podcast host, and co-founder of the American company, Rooster Teeth
Engineering, religion and science •
Gustavo Colonnetti (1886–1968), Italian mathematician and engineer •
Gustavo Gutiérrez Merino (1928–2024), Peruvian theologian and Dominican priest regarded as the founder of Liberation Theology at the University of Notre Dame •
Gustavo Tamayo, Colombian ophthalmologist •
Gustavo Marín, Chilean-French economist and sociologist •
Gustavo Scuseria (born 1956), Robert A. Welch Professor of Chemistry, Professor of Physics & Astronomy and Professor of Materials Science & NanoEngineering at Rice University
Music •
Gustavo Angel (born 1968), Mexican singer of Los Temerarios •
Gustavo Assis-Brasil, Brazilian jazz guitarist •
Gustavo Becerra-Schmidt (1925–2010), Chilean composer •
Gustavs Butelis (born 1978), Latvian rapper and producer known professionally as Gustavo • Gustavo Gonzalez, also known as Big Duke, member of American hip-hop group
Psycho Realm •
Gustavo Cerati (1959–2014), Argentine artist and songwriter •
Gustavo Cordera (born 1964), Argentine rock musician •
Gustavo Dudamel (born 1981), Venezuelan conductor •
Gustavo Lapis Ahumad, founding member of American goth rock band Bitter Grace •
Gustavo Ramírez Reyes, Mexican musician and composer •
Gustavo Santander, Colombian composer •
Gustavo Santaolalla (born 1952), Argentine musician, producer, and composer •
Gusttavo Lima (born 1989), Brazilian singer, song writer and record producer
Military and politics •
Gustavo A. Madero (1875–1913), participant in the Mexican Revolution •
Gustavo Adolfo Espina Salguero (born c.1946), former vice-president of Guatemala •
Gustavo Arcos Bergnes (1926–2006), Cuban revolutionary alongside Fidel Castro •
Gustavo Díaz Ordaz Bolaños Cacho (1911–1979), President of Mexico from 1964 to 1970 •
Gustavo Espinoza, Peruvian politician and Congressman •
Gustavo Esteva, Mexican activist who founded the Universidad de la Tierra in Oaxaca, Mexico •
Gustavo Jiménez (c.1886–1933), Peruvian Colonel who served as President of Peru for six days •
Gustavo Leigh Guzmán (1920–1999), representative of the Air Force in the Government Junta that ruled Chile •
Gustavo Noboa Bejarano (1937–2021), Ecuadorian politician, President of Ecuador from 2000 to 2003 •
Gustavo Petricioli (1928–1998), Mexican economist and ambassador to the United States • •
Gustavo Rojas Pinilla (1900–1975), military dictator and Colombian political figure •
Gustavo Vázquez Montes (1962–2005), Mexican politician of the PRI, governor of Colima • , Spanish politician and diplomat •
Carlos Gustavo dos Anjos, São Toméan diplomat and Foreign Minister
Sports •
Gustavo Adrián López (born 1973), Argentine footballer •
Gustavo Andrés Oberman (born 1985), Argentine footballer •
Gustavo Ayón, Mexican basketball player •
Gustavo Badell (born 1972), Venezuelan IFBB professional bodybuilder •
Gustavo Ballas (born 1958), Argentine boxer •
Gustavo Barros Schelotto, Argentine footballer •
Gustavo Benítez (born 1953), Paraguayan football defender and manager •
Gustavo Boccoli (born 1978), Brazilian footballer •
Gustavo Borges (born 1972), Brazilian swimmer •
Gustavo Cabrera (born 1979), Guatemalan footballer •
Gustavo Chacín (born 1980), Venezuelan starting pitcher in Major League Baseball •
Gustavo Santos Costa (born 1996), Brazilian footballer for Hồ Chí Minh City F.C. •
Gustavo Dezotti, Argentine football striker •
Gustavo Endres, Brazilian volleyball player •
Gustavo Enrique García (born 1980), Mexican footballer •
Gustavo Gómez (born 1993), Paraguayan footballer •
Gustavo Gonçalves (born 2003), Portuguese canoeist •
Gustavo Kuerten (born 1976), Brazilian tennis player •
Gustavo Marzi (1908–1966), Italian fencer •
Gustavo Manduca (born 1980), Brazilian footballer •
Gustavo Méndez (born 1971), Uruguayan footballer •
Gustavo Méndez (referee) (born 1967), Uruguayan football (soccer) referee •
Gustavo Morínigo (born 1977), Paraguayan football midfielder •
Gustavo Munúa (born 1978), Uruguayan football goalkeeper •
Gustavo Nascimento da Costa (born 1995), Brazilian footballer •
Gustavo Nery (born 1977), Brazilian footballer •
Gustavo Oliveros (born 1946), Cuban fencer •
Gustavo Lobo Paradeda (born 1979), Brazilian-born Russian futsal player •
Gustavo Poyet (born 1967), Uruguayan footballer •
Gustavo Pereira (born 1997), Brazilian footballer for Retrô •
Gustavo Quinteros Desabato (born 1965), Bolivian football player and coach •
Gustavo Salgueiro de Almeida Correia (born 1985), Brazilian footballer •
Gustavo Sant'Ana Santos (born 1995), Brazilian footballer for Sài Gòn •
Gustavo Claudio da Silva (born 1988), Brazilian footballer for Nakhon Si United •
Gustavo Tambunting (born 1964), Filipino politician •
Gustavo Valderrama (born 1977), Venezuelan volleyball player •
Gustavo Varela (born 1978), Uruguayan footballer •
Gustavo Varela (footballer, born 2005), Portuguese footballer •
Luis Gustavo Dias (born 1987), Brazilian footballer •
Arthur Gustavo Malzahn III (born 1965), American football coach
Writing •
Gustavo Adolfo Bécquer (1836–1870), Spanish writer of poetry and short stories •
Gustavo Adolfo Martínez Zuviría (1883–1962), novelist and scriptwriter from Argentina •
Gustavo Adolfo Mellander (born 1935), Swedish-Panamanian writer, professor, college president, and historian •
Gustavo Pérez Firmat (born 1949), Cuban-American writer, poet, professor •
Gustavo Gorriti, Peruvian journalist •
Gustavo Sainz (1940–2015), Spanish language author from Mexico
Other professions •
Gustavo C. Garcia (1915–1964), American civil rights attorney and advocate •
Gustavo Charif (born 1966), Argentine artist •
Gustavo Cisneros (born 1946), Venezuelan-born media mogul •
Gustavo Ferraro, Argentine banker •
Gustavo Franco, Brazilian economist, president of the Brazilian Central Bank 1994–1995 and 1997–1999 •
Gustavo Gianetti (born 1979), Brazilian model, Mister World 2003 •
Gustavo Lorgia (1951–2024), Colombian illusionist •
Gustavo Martínez Zuviría, de facto Federal Interventor of Córdoba, Argentina •
Gustavo Rol (1903–1994), Italian sensitive •
Gustavo R. Vincenti (1888–1974), Maltese architect and developer == Fictional characters ==