Otilio is a given name. Notable people with the name include:
Otilio Ulate Blanco (1891–1973), President of Costa Rica from 1949 to 1953 Otilio Galíndez (1935–2009), Venezuelan musician and composer Otilio Olguín (1931–1994), Mexican former swimmer and water polo player, competed in the 1952 Summer Olympics Otilio Alba Polo (1915–1941), Spanish Catalan politician Otilio Montaño Sánchez (1887–1917), Zapatista general during the Mexican Revolution Otilio Warrington, known as Bizcocho (born 1944), comedian
See also Escuela Preparatoria Tlalpan II "Otilio Montaño", senior high school in San Miguel Topilejo, Tlalpan, Mexico City Pepe Gotera y Otilio, Spanish comic characters: two bumbling and disastrous workmen Ottiglio