The incident is alleged to have happened at Cathal Brugha Barracks in Rathmines in the early hours of this morning
Military police have been called in after an alleged sexual assault at an army barracks in Dublin.
Gardaí are also investigating after a woman made a complaint relating to Cathal Brugha Barracks in Rathmines.
Gardaí say they were told an assault took place at around 2am this morning.
No arrests have been made and Gardaí say investigations are continuing.