[6] Miller made his national team debut against Scotland on 19 June 1983[7] and was a squad member for Canada's first World Cup finals appearance in 1986 although he did not play.

[11] On 3 July 2007, it was announced that Colin Miller was hired as assistant first-team coach of Derby County, an English club playing the 2007–08 season in the Premier League.

On 2 April 2008, Miller was introduced as the coach and Director of Soccer Operations for the Victoria Highlanders FC of the USL Premier Development League.

[13] Miller served as assistant coach of Vancouver Whitecaps FC during the club's 2011 inaugural season in Major League Soccer.

[17] The CSA announced in mid-June that Miller would continue as interim head coach for Canada during the 2013 CONCACAF Gold Cup.