Cannabis worth almost €2m has been seized at a warehouse in Clondalkin.
The drugs were found yesterday when officers raided an industrial unit.
Three men, aged 32, 49 and 57 have been arrested.
They are being held at Clondalkin and Ballyfermot Garda Stations.
Revenue officers were joined in the search by the Garda National Drugs and Organised Crime Bureau.
Gardai from Security and Intelligence in West Dublin also took part in the raid.
The operation was part of ongoing joint investigations targeting organised crime groups.
Revenue has asked anyone with information about drug smuggling to report it confidentially by phoning 1800 295 295.
