Up to four people were caught selling counterfeit merchandise outside Forsyth Barr Stadium, in Dunedin, last night.
A spokeswoman from the Ministry of Business, Innovation and Employment (MBIE) said with assistance from police it seized the merchandise before the Highlanders v Lions game.
A similar number of people were caught selling counterfeit merchandise before the the Lions' game against the Crusaders in Christchurch.
MBIE was investigating the incidents.
The spokeswoman said the Lions series had been declared a "major event" under the Major Events Development Act.