Colomer (, ) is a Spanish surname. Notable people with the surname include:
André Colomer (1886–1931), French poet and anarchist Dámaso Ruiz-Jarabo Colomer (1949–2009), Spanish judge Edmon Colomer, Spanish conductor Eduardo Comín Colomer (1908–1975), Spanish writer and journalist Jordi Colomer (born 1962), Spanish artist José Colomer (1935–2013), Spanish field hockey player Josep Colomer, Spanish political scientist Juan J. Colomer (born 1966), Spanish composer Maria Josep Colomer i Luque (1913–2004), Catalan-Spanish pioneer female pilot Narciso Pascual Colomer (1808–1870), Spanish architect Raúl Martínez Colomer, Puerto Rican swimmer