The 2011 Formula 3 Euro Series season was the ninth championship year of the Formula 3 Euro Series. It began on 2 April at Circuit Paul Ricard and finished on 23 October at Hockenheim after 21 races at nine meetings.
Roberto Merhi, who participated his third season in series clinched title after home win at Valencia with a round to spare, bringing first Drivers' Championship for Prema Powerteam since 2003 and first title in the Teams' Standings. Second place for the second year in row went to Signature's Marco Wittmann, who took five wins. Merhi's compatriot and teammate Daniel Juncadella scored four races victories and managed third in drivers' standing. Also Juncadella and Merhi won Nations Cup.
Nigel Melker competed for Mücke Motorsport, alongside his GP3 commitments with the team. Felix Rosenqvist joined him, stepping up from German Formula Three.