New Zealand gang Mongrel Mob will be outlawed in Queensland, Attorney-General Yvette D'Ath has told estimates hearings.

Ms D'Ath said the gang would be declared an identified organisation, with the declaration to be approved by Governor in Council on Thursday.

The Mongrel Mob has had an increasing presence in Queensland.

She said the gang was described as one of the most fearsome in the world.

"The police commissioner has advised there is evidence of Mongrel Mob activity in Queensland and we are acting to prevent it from establishing a foothold in the state," Ms D'Ath said.