2015 Orange County Blues FC season

The 2015 Orange County Blues FC season was the club's sixth season of existence, and their sixth season playing in the third tier of American soccer, USL.

The Blues were dominant all season, winning fourteen games and placing first in the Western Conference, with a record of 14–5–9, which automatically qualified them to the USL Playoffs Semi-Finals. Despite their dominance all season, they were ultimately shut-out in a 2–0 defeat against rivals LA Galaxy II away at StubHub Center.

U.S. Open Cup
As a member of the USL, the Blues entered the U.S. Open Cup in the second round, matched up against amateur club PSA Elite, a member of the USASA.