The fifth season of the sports entertainment reality competition series Australian Ninja Warrior premiered on 20 June 2021 on the Nine Network.
[4] In June 2021, Nine announced Nick Kyrgios would be joining the series as a sideline commentator alongside Shane Crawford, Andrew Flintoff didn't return for this season due to travel challenges and a busy schedule.
[5] In October, it is announced that Ben Fordham won't return for season 6, opting to focus on his radio career.
Returning athlete Bryson Klein was given a fast pass to the Grand Final, after beating last season's winner Ben Polson on the Power Tower.
Returning athlete Zak Stolz received a second chance advantage for the Grand Final, after beating Rob Patterson on the Power Tower.
Returning athlete Jake Baker received a second chance advantage for the Grand Final, after beating Jack Wilson on the Power Tower.
Returning athlete Mike Snow received a second chance advantage for the Grand Final, after beating Alex Bigg on the Power Tower.