Revenue officials seized drugs worth an estimated €220,000 following a search of two houses in the Cabra and Finglas areas of Dublin.
The 11 kilos of herbal cannabis found were concealed in two packages described as 'clothing'.
A garda spokeman said: "Gardaí arrested a 40 year old and 37 year old male at the scene. They are currently detained under Section 2 of The Criminal Justice (Drugs Trafficking) Act 1996 at Store Street and Cabra Garda Stations.
The drug search was part of a joint-intelligence lead operation, conducted by Revenue’s Customs Service, the Garda Drugs & Organised Crime Bureau, the K Community Action Team and Gardaí from Store Street Drugs Unit.
A Revenue spokeswoman added: "These routine operations are part of Revenue's ongoing work targeting smuggling and shadow economy activity.
"If businesses, or members of the public have any information, they can contact Revenue in confidence on Confidential Phone Number 1800 295 295."
Revenue and An Garda Siochana say investigations are continuing.
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