Cornejo is a Spanish surname meaning someone who lived by a Dogwood tree or who lived in one of several places called Cornejo. It may refer to:
Alfredo Cornejo (born 1933), former Chilean boxer
Antonio Cornejo Polar (1936–1997), Peruvian-born academic, teacher, literature and cultural critic
Cristina Kotz Cornejo, Argentine-American director and screenwriter
Diego Borja Cornejo or Diego Borja, Ecuadorian economist and politician
Enrique Javier Cornejo Ramirez, Peruvian Minister of Transportation and Communications
Fernanda Cornejo (born 1989), Miss International Ecuador 2011
Fernando Cornejo (1969–2009), Chilean football midfielder
Francisco Cornejo (1892–1963), Mexican painter and sculptor specializing in Maya and Aztec themes
Francisco Javier Cornejo (1669–1750), Spanish military commander of the Spanish navy
Gerardo Cornejo Murrieta (born 1937), writer born in Arivechi, Sonora, Mexico
German Cornejo & Gisela Galeassi, Argentinian Tango dance duo
Jessica Dinora Cornejo (born 1995), Foreign Language Teacher, Virginia, USA
Jorge Ledezma Cornejo (born 1963), Bolivian lawyer and politician
José María Cornejo (1788–1864), Salvadoran politician
Juan Cornejo, Chilean politician
Luis Manuel Cornejo, professor at Columbus University in Panama city
Mardie Cornejo (born 1951), Major League Baseball relief pitcher
Miguel R. Cornejo (1888–1984), Mayor of the City of Pasay, Philippines
Nate Cornejo (born 1979), former professional baseball player
Oscar Roberto Cornejo (born 1983), Argentine footballer
Patricio Cornejo (June 6, 1944), retired Chilean professional tennis player
Pedro Cornejo de Pedrosa (1536–1618), Spanish Carmelite, theologian, professor of the University of Salamanca
Pedro Duque y Cornejo (1677–1757), Spanish Baroque painter and sculptor of the Sevillian school of sculpture
Joan Cornejo (1978), First Venezuelan Seventh-Day Adventist woman to become a professional chaplain for Adventist Health System and Florida Hospital.