Below are collated results of the third round matches of CONCACAF World Cup 2018 qualifying. Ties are two-leg series and standard FIFA rules apply (aggregate goals, away goals rule, extra time and penalties if tied on aggregate and away goals). Home team of first leg is listed first, and its score is listed first for both legs. Teams through to the next round are in bold red lettering.
THIRD ROUND (Ties to be played between 31 August and 8 September)
Curaçao - El Salvador
Canada - Belize
Grenada - Haiti
Jamaica - Nicaragua
St. Vincent and the Grenadines - Aruba
Antigua and Barbuda - Guatemala