Newey said: “Lawrence is determined to create a world-beating team. He is the only majority team owner who is actively engaged in the sport.
“His commitment is demonstrated in the development of the new AMR Technology Campus and wind tunnel at Silverstone, which are not only state of the art but have a layout that creates a great environment to work in.
“They have all the key pieces of infrastructure needed to make Aston Martin a world championship-winning team and I am very much looking forward to helping reach that goal.”
Lawrence Stroll said he was “incredibly proud” Newey had decided to join Aston Martin. Newey also had conversations with Ferrari, McLaren, Williams and Alpine.
“Adrian is the best in the world at what he does – he is at the top of his game.
“It’s the biggest story since the Aston Martin name returned to the sport and another demonstration of our ambition to build an F1 team capable of fighting for world championships.
“As soon as Adrian became available, we knew we had to make it happen.
“Our initial conversations confirmed that there was a shared desire to collaborate in a once-in-a-lifetime opportunity.
“Adrian is a racer and one of the most competitive people I have ever met. He quickly understood what we are trying to achieve. We mean business – and so does he.”
Newey will start work for Aston Martin from early March next year and will join forces with a team of engineers in which Stroll has already invested heavily.
The team’s technical director is Dan Fallows, an aerodynamicist who worked under Newey at Red Bull from 2006-21.
Former Mercedes engine chief Andy Cowell, who masterminded the building of the standard-setting engine in F1’s hybrid era, joins as chief executive officer on 1 October.
And former Ferrari chassis technical director Enrico Cardile will start as chief technical officer at an unspecified date in 2025.