Ratkovo (Hungarian: Vágratkó) is a village and municipality in Martin District in the Žilina Region of northern Slovakia.
In historical records the village was first mentioned in 1489.
Before the establishment of independent Czechoslovakia in 1918, it was part of Turóc County within the Kingdom of Hungary.
The municipality lies at an altitude of 440 metres and covers an area of 0.909 km2.
This Žilina Region geography article is a stub.