Gasly made his GP2 Series debut in 2014 at Monza circuit in support of Italian Grand Prix, replacing Caterham Racing driver Tom Dillmann who had commitments at other racing series and was unable to participate in GP2 Series races for that weekend. He then partook in post-season testing, driving for DAMS and signed with the French team to race alongside the British driver Alex Lynn, development driver of Williams F1 Team. Though taking three pole positions and four podiums, Gasly experienced an uneven season, including causing collisions in Bahrain, Spa and Yas Marina (which got the subsequent race cancelled), which saw him finish eighth, two places behind teammate Lynn.