James "Jimmy" Vasser Jr. (born November 20, 1965) is an American former racing driver who competed primarily in the CART series and Champ Car.

He currently co-owns Vasser Sullivan Racing, claiming the GTD Pro teams title at the 2023 IMSA SportsCar Championship.

But at Portland, race winner Al Unser Jr.'s car failed post-race inspection due to insufficient ground clearance.

Unser was stripped of the victory, and Vasser was elevated to the winner, tentatively his first-career Indy car triumph.

Continuing the strong start to 2001, Vasser was reunited with Target Chip Ganassi Racing driving for them in the Indianapolis 500.

In the Shell car, Vasser showed some muscle at Long Beach scoring the pole, leading laps late, and finishing 2nd behind Michael Andretti.

Vasser really finished the year strong with scoring points in each of the final nine races including a podium at Miami and a dominating win at Fontana after a late-race pass of Andretti.

Additionally, Reynard had gone bankrupt so further development of the chassis had to be taken on by the teams so the performance gap to the Lolas continue to widen during the season.

Except for a couple of fourth-place finishes, leading 15 laps at Cleveland, and podium at Surfer's Paradise in a wet/dry race the season was not very successful as rookie teammate Ryan Hunter-Reay was outpacing Vasser.

Vasser reunited with Rahal Letterman for his final run at an Indianapolis 500 win but was again sidelined with gearbox failure during the race.

He temporarily came out of retirement to drive in the final Champ Car World Series event at the 2008 Toyota Grand Prix of Long Beach.

In 2007, he again drove for the renamed GAINSCO/Bob Stallings Racing at the 24 Hours of Daytona, and on Sept. 4, 2007, it was announced that he would return to the team for the season-ending Sunchaser 1000 km.

Vasser drove again for Stallings' team beginning at Laguna Seca in May 2008, pairing with fellow Champ Car champion Cristiano da Matta.