Alpine is set for an all-French lineup next year.
UPDATE: Pierre Gasly has officially signed for Alpine and will join countryman Esteban Ocon for the 2023 Formula One season. Dutchman Nyck de Vries replaces him at Alpha Tauri.
Gasly, 26, said he was "delighted to begin this new chapter in my F1 career".
"Driving for a team that has French roots is something very special," he said. "I know the strengths of Alpine having raced against them over the past couple of years and, clearly, their progress and ambition is very impressive."
With former two-time F1 world champion Fernando Alonso announcing he will race for Aston Martin next season, Alpine was left with an open seat. The Spanish driver will take over for four-time champ Sebastian Vettel, who announced his retirement earlier this year.
Anyone who follows F1 knows there was some controversy surrounding the open Alpine seat, as the team previously announced Oscar Piastri, only for the Australian F2 champion to come out and claim that this news was false. Instead of the Alpine spot, Piastri will take Ricciardo's seat at McLaren.
Gasly will join Esteban Ocon, giving Alpine an all-French driver lineup, the first time this has happened since 1994.
His replacement at Alpha Tauri, Nyck de Vries said: "After Formula 2, I took a slightly different path with motorsport, but F1 has always been my dream and I'm grateful to be able to fulfill it. I've had a lot of chances to experience the 2022 car this year and I think that has put me in a great position for the upcoming season, I hope this has helped to prepare me for what is to come."
He joins Japanese Yuki Tsunoda, who will continue with Alpha Tauri next season.
De Vries, the current Formula 2 champion, stood in for Alex Albon (Williams) at the Monza Grand Prix earlier this year. He scored points on his first outing in an F1 car and impressed the fans so much that he was awarded Driver of the Day. Next year, there will be two Flying Dutchmen on the grid.
Gasly currently ranks 13th in the 2022 F1 standings, well above his teammate Yuki Tsunoda at 17. His future teammate Esteban Ocon currently ranks eighth.
Alpine will hope its new driver can help the team score some points and podiums next year in a bid to unseat McLaren as the best of the midfield.
As part of the move, Gasly will likely trade his Acura Integra keys for a sweet Alpine A110.