 As a player, Barr has won every domestic honour in the Scottish women's game and was an FA Women's Cup runner-up with Doncaster Belles in 2002.Barr made her debut for the Scotland women's national team in 1996 against the Republic of Ireland and went on to win 87 caps, scoring once.She played professionally in Iceland for ÍBV between 2001–2004, becoming club captain.