Contraband, with an estimated value of more than €654,000, has been seized in Dublin, the midlands and at Rosslare Europort in Co Wexford.
The detections were made as part of risk profiling and intelligence led operations in recent days.
The seizures include 26kg of herbal cannabis with an estimated value of over €523,000.
Around 21.5kg of this was recovered at Dublin Airport last Friday, concealed in vacuum packed packages within the baggage of a passenger who had disembarked a flight from Malaga.
A man in his 30s was arrested.
Other seizures include 282 counterfeit items worth more than €90,3000, over €13,400 worth of butane honey oil, tobacco products worth around €8,200, and just over a kilogramme of cannabis resin with an estimated value of over €6,800.
Over 309 litres of alcohol worth around €4,200 was also discovered, along with drugs with an estimated value of more than €7,700.
Forty-nine accessories for weapons were seized.
The herbal cannabis and illicit drugs seizures were made with the help of detector dogs Ciara, Molly and Jasper.
The parcels originated in the US, UK, Canada, Thailand, France and the Netherlands, and were destined for various addresses around the country.
Investigations into all of the seizures are ongoing.
