Cecilio is a given name. Notable people with the name include:
Cecilio Apostol (1877–1938), Filipino poet Cecilio Báez (1862–1941), provisional President of Paraguay 1905–1906 Cecilio Guante (born 1960), professional Major League Baseball player Cecilio Lastra (1951–2025), Spanish professional boxer Ronaldo Cecilio Leiva, Guatemalan military officer, Minister of Defence from 2006 to 2008 Cecilio Lopes (born 1979), Cape Verdean international football player Cecilio Pérez Bordón, Paraguayan Minister of Public Works under President Fernando Lugo Cecilio Plá (1860–1934), Spanish painter Cecilio Putong, Filipino educator, writer, Boy Scout leader, UNESCO fellow, author, pensionado and Philippine Secretary of Education Cecilio Romaña (1899–1997), Argentinian physician remembered for describing Romaña's sign José Cecilio del Valle (1780–1834), first president of United Provinces of Central America Cecilio Waterman (born 1991), Panamanian professional association football striker Cecilio Zubillaga Perera (1887–1948), Venezuelan journalist
See also Aguada Cecilio, village and municipality in Río Negro Province in Argentina Cecilio & Kapono, pop music duo from Hawaii formed in 1973 by Henry Kapono Ka’aihue and Cecilio David Rodriguez Doctor Cecilio Báez, town in the Caaguazú department of Paraguay Dr. Cecilio Putong National High School, originally the Bohol National High School Nadie oyó gritar a Cecilio Fuentes, 1965 Argentine film Universidad José Cecilio del Valle, private higher education institution in Honduras