He has been banned after being cited for a dangerous tackle during the Super Rugby final defeat to the Crusaders last Saturday in Hamilton.
Lienert-Brown made head on head contact with Crusaders wing Dallas McLeod when making a tackle.
McLeod failed the Head Injury Assessment and was removed from the game.
Lienert-Brown was yellow carded by referee Ben O'Keefe at the time, but was later cited with the incident deemed to have med the red card threshold.
Lienert-Brown has been suspended for 3 weeks, up to and including 29 July.
