Justin Avendano (born 11 August 1993) is an Australian cricketer who represents the Sydney Sixers in the Big Bash League.
Avendano plays club cricket for North Sydney and for the Cricket NSW High Performance Transition Academy squad. In 2012 featured on the FOX Sports reality show Cricket Superstar. Avendano is a big hitting batsman and in a Sydney Sixers Academy match in November 2018 against Auckland at the Hurtsville Oval, his innings of 122 from 63 balls included hitting the maximum 6 sixes in one single 6-ball over. Avendano also hit a century opening the batting against the Lahore Qalanders at the Blacktown International Sports Park in October 2017.
He made his Twenty20 debut for Sydney Sixers in the 2018–19 Big Bash League season on 1 January 2019.