Barry James Douglas (born 4 September 1989) is a Scottish professional footballer who plays as a left-back for Ekstraklasa club Lech Poznań and the Scotland national team. After playing for Queen's Park and Dundee United in Scotland, he joined Polish club Lech Poznań in 2013, where he won the 2014–15 Ekstraklasa title. He signed for Konyaspor in Turkey in 2016, after which he joined Wolverhampton Wanderers in 2017. Douglas enjoyed a successful season with Wolves, winning the 2017–18 EFL Championship and making his full international debut. He joined Leeds United in July 2018, where he won the 2019–20 EFL Championship under Manager Marcelo Bielsa.