The knockout stage of the 2015 CONCACAF Gold Cup began on 18 July 2015 and ended with the Final on 26 July 2015, to decide the champions of the 2015 CONCACAF Gold Cup. A total of eight teams competed in the knockout stage.
The top two placed teams from each of the three groups, plus the two best-placed third teams, qualified for the knockout stage.
The tournament bracket is shown below, with bold denoting the winners of each match.
<section begin=Bracket /><section end=Bracket />
<section begin=qf1 /><section end=qf1 />
<section begin=qf2 /><section end=qf2 />
<section begin=qf3 /><section end=qf3 />
<section begin=qf4 /><section end=qf4 />
<section begin=sf1 /><section end=sf1 />
<section begin=sf2 /><section end=sf2 />
<section begin=TP /><section end=TP />