Justin Lee Langer AM (21 November 1970) is an Australian cricket coach and former cricketer. He is the former coach of the Australia men's national team, having been appointed to the role in May 2018 and leaving in February 2022. A left-handed batsman, Langer is best known for his partnership with Matthew Hayden as Australia's test opening batsmen during the early and mid-2000s, considered one of the most successful ever. Representing Western Australia domestically, Langer played English county cricket for Middlesex and also Somerset. He holds the record for the most runs scored at first-class level by an Australian.