John McQuilliam

John McQuilliam (born 3 August 1962) is a Formula One car designer from England.

He worked for Williams from 1986 and subsequently Arrows[1] as a composite engineer before joining Jordan.

After Jordan was purchased by Midland Group in 2005, McQuilliam remained with the team until it was sold again to Spyker Cars in 2007.

After the demise of Manor Racing, McQuilliam joined Prodrive, working as Chief Engineer in their composites division.

In 2024, McQuilliam joined Andretti Global to serve as the team's chief designer for their upcoming Cadillac Formula One Team, which plans to enter the sport in 2026.