Roy Miller Hernández (born November 24, 1984) is a Costa Rican former professional footballer who played as a defender.

In 2002, he went on trial with Argentine side Olimpo de Bahía Blanca, but was unable to acclimate himself to the club and returned to Costa Rica.

[2] He had a successful stay at Bodø/Glimt, appearing in 52 league matches and scoring 6 goals, leading to interest from top Norwegian side Rosenborg.

In February 2008 Miller signed a 3-year long contract with Rosenborg,[3] and quickly established himself as the team's starting left back.

[6] On October 21, 2010 Miller started for Red Bulls in a 2–0 victory over New England Revolution which clinched the regular season Eastern Conference title.