The Jaguar R3 is a Formula One racing car with which Jaguar Racing competed in the 2002 Formula One season. The car was launched on 4 January 2002. It was driven by Eddie Irvine and Pedro de la Rosa, both retained from 2001. A "B Specification" car named the Jaguar R3B made its debut at the 2002 British Grand Prix and used for the remainder of the 2002 season.

This was the first Jaguar Formula One car to run on BP fuel and Castrol lubricant following Chevron's decision to pull out from the sport.

After the disappointing past two seasons, 2002 was even worse for Jaguar. The team admitted to making a lot of mistakes especially in the wind tunnel, as its calculations were wrong. After a fortuitous fourth place at the attritional Australian Grand Prix, the car's poor reliability and lack of horsepower began to show and the team slipped down the rankings; however, towards the end of the season updates were brought in and the car began to improve, culminating in Irvine scoring the team's final podium finish at Monza.

The team finished 7th in the Constructors' Championship, with eight points, all scored by Irvine.

In France, the Beck's logos were read out as "Best's". The "007" logos featured on the side mirrors, denoting the film Die Another Day.

Fernando Alonso tested an R3 at Silverstone Circuit on 30 May 2002.

One of the R3s is still driven in competition regularly by Riccardo Ponzio in BOSS GP, who competed in 2021 season in the Open class. Ponzio continued to compete in 2022, although he drove in the F1 class.

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