Gamarra is a surname of Basque origins. Notable people with the surname include:
Agustín Gamarra (1785–1841), 13th President of Peru Carlos Gamarra (born 1971), Paraguayan footballer Carlos Gamarra Ugaz, Peruvian politician and attorney Celso Fabián Ortíz Gamarra (born 1989), Paraguayan footballer Daniel Gamarra (born 1978), Uruguayan footballer Fredy José Bareiro Gamarra (born 1982), Paraguayan footballer José Gamarra (born 1934), Uruguayan artist Karen Keys-Gamarra, American politician from Virginia Luis Gamarra (born 1992), Bolivian singer Óscar Gamarra (born 1987), Paraguayan footballer Pedro Sánchez Gamarra, Peruvian politician Pierre Gamarra (1919–2009), French writer Roberto Gamarra (footballer born 1981), Paraguayan footballer Rodolfo Gamarra (born 1988), Paraguayan footballer Roberto Gamarra (coach) (born 1958), Argentine and naturalised Paraguayan footballer and coach Ronald Gamarra Herrera, Peruvian politician and lawyer