The 2019 Race of Champions is to be held in Mexico and sees teams race each other over two days with equal equipment.
"It’s a big honour to be taking part in the Race Of Champions for the first time," Gasly said to motorsportweek.com.
"I’ve known about the event for many years, and I’m excited to see how it works first-hand at last.
"I know France has a rich tradition of driving success at the event so I’m looking forward to aiming for another strong performance in partnership with Loic in the ROC Nations Cup.
"Most of all I’m looking forward to hearing the noise of the Mexican crowds. I know the Foro Sol well from Formula 1, it’s a spectacular venue and we will all put on a great show for the fans."
The event has a host of big names competing with the likes of Sebastian Vettel and David Coulthard racing.