The 2015 GP2 Series season was the forty-ninth season of the second-tier of Formula One feeder championship and also eleventh season under the GP2 Series moniker, a championship for open-wheel racing cars run as a support series to the 2015 Formula One World Championship.
Twenty-six drivers representing thirteen teams raced over eleven rounds, starting in Bahrain on 18 April and finishing in Abu Dhabi on 29 November.
The pole-sitter in the feature race also received four points, and two points were given to the driver who set the fastest lap inside the top ten in both the feature and sprint races.
Due to a first lap accident resulting in barriers needing to be repaired, the first race at Sochi was shortened to 15 laps instead of the 28 originally scheduled, and as a result half points were awarded.
[55] The second race at Yas Marina was cancelled after a first lap accident, during which four cars made contact with the barriers on the outside of turn 3.