Canadian football Association president Victor Montagliani announced Thursday that Hart had quit.
Canada needed a tie or win to advance to next year's six-nation finals in North and Central America and the Caribbean. The seven-goal loss was its largest margin since an 8-0 defeat at Mexico in 1993.
Hart was hired in December 2009. Including an interim stint in 2006-07, he managed Canada to a 20-15-10 record.
