The preliminary round of the 2018–19 CONCACAF SuperLiga was held from 28 June 2018 through 5 July 2018. Below is a list of the matches from that round.
Diables Rouges won 5–1 on aggregate.
Bata Falcons won 3–1 on aggregate.
San Francisco won 5–2 on aggregate.
Josefina won 1–0 on aggregate.
Syracuse FC won 9–1 on aggregate.
Arawak won 3–2 on aggregate.
Saint Pierraise won 4–2 on aggregate.