Serio
Introduction '''Serio''' may refer to:*Sério, a municipality in Rio Grande do Sul, Brazil*Serio (river), a river in Lombardy, Italy** Cascate del Serio*11022 Serio, a main belt asteroid
People with the surname *José Sério (1922–2010), Portuguese footballer*Renato Serio (born 1946), Italian composer, conductor and arranger*Steve Serio (born 1987), American wheelchair basketball player
Fictional *Serio (HMX-13), a character from the visual novel ''To Heart''