Guardia is a surname. Notable people with the surname include:
Gloria Guardia (1940–2019), Panamanian novelist Guillermo Guardia (born 1960), Costa Rican footballer Jaime Guardia (1933–2018), Peruvian singer Maribel Guardia (born 1959), Costa Rican actress Rómulo Guardia (born 1961), Venezuelan film producer Tomás Guardia Gutiérrez (1831–1882), Costa Rican politician Victoria Guardia Alvarado (born 1939), Costa Rican politician