The 2018 GoPro Grand Prix of Sonoma was the 17th and final round of the 2018 IndyCar Series season.

2014 Indy 500 winner Ryan Hunter-Reay qualified on pole position,[1] and took victory in the 85-lap race.

[2] This also marked the last IndyCar Series race at Sonoma, as since 2019, the season finale held at the WeatherTech Raceway Laguna Seca.

It was also the final race for Verizon Communications as the series sponsor, as NTT took over as title sponsor for 2019.

Notes: 1 Points include 1 point for leading at least 1 lap during a race, an additional 2 points for leading the most race laps, and 1 point for Pole Position.