Ránquil is a Chilean commune in Itata Province, Ñuble Region.

According to the 2002 census of the National Statistics Institute Ránquil had 5,683 inhabitants (2,896 men and 2,787 women).

[3] As a commune, Ránquil is a third-level administrative division of Chile administered by a municipal council, headed by an alcalde who is directly elected every four years.

[1][2] Within the electoral divisions of Chile, Ránquil is represented in the Chamber of Deputies by Jorge Sabag (PDC) and Frank Sauerbaum (RN) as part of the 42nd electoral district, together with San Fabián, Ñiquén, San Carlos, San Nicolás, Ninhue, Quirihue, Cobquecura, Treguaco, Portezuelo, Coelemu, Quillón, Bulnes, Cabrero and Yumbel.

The commune is represented in the Senate by Alejandro Navarro Brain (MAS) and Hosain Sabag Castillo (PDC) as part of the 12th senatorial constituency (Biobío-Cordillera).