None of the 42 people had permission to be in the country.
The Justice Minister says 42 Brazilians have been deported from the country since June.
In a post on social media, Jim O'Callaghan says it includes 15 people serving prison sentences.
He added that none of the 42 people had permission to be here.
He said the deportations took place on commercial flights.

O'Connell Street Cleared After Major Garda Operation
Galway Port Protest Cleared Following Garda Operation
Rosslare Europort Faces Disruption Amid Fuel Protests
Fuel Protests Force Major Road Closures Across Leinster
Artemis 11 Lands Safely
Fuel Blockades Continue
Protestors, Including Kildare's John Dallon, Refused Entry From Government And Agriculture Bodies Meeting
Artemis II Prepares To Splash Down Off US Coast