On 31 August 2009 Domínguez was called by coach Diego Maradona for the Argentine national team, along fellow Vélez Sársfield teammates Nicolás Otamendi and Emiliano Papa [REF].
Domínguez was later called by coach Alejandro Sabella for the 2011 and 2012 editions of the friendly competition Superclásico de las Américas, in which he captained the national team [REF].