Method Overriding is a feature in object-oriented programming that allows a subclass to provide a specific implementation of a method that is already defined in its superclass. This means that when a method is called on an object of the subclass, the overridden version in the subclass is executed instead of the original method in the superclass. This technique is useful for achieving polymorphism, where a single interface can represent different underlying forms (data types). By overriding methods, developers can customize or extend the behavior of inherited methods, making their code more flexible and easier to maintain.