Jason Keller (born April 23, 1970) is an American professional driver. Previously, he was a mainstay in NASCAR's second-tier series, competing in 519 Nationwide Series races between 1991 and 2010. On May 15, 2010, Keller made his 500th career start, the first driver in series history to do so.

Keller was born in Greenville, South Carolina, and began his racing career on kart tracks, moving up to Late-Model Sportsman dirt-track racing at the age of 16. He drove the #57 Chevy owned by Jack Finley of Easley, South Carolina.

Keller made his Busch series debut in the 1991 May race at Lanier Speedway. He piloted the #54 Air Products Buick home in 29th after starting 8th.

Air Products would sponsor his family-owned team from 1991 to 1994, during that time using the numbers 54 and 45, before finally settling on the #57, a number Jason would use until the end of the 2003 season. Keller grabbed his first top-10 finish in his 7th start at the North Carolina Speedway in February 1993.

His first top-5 would come one year later in the fall race of 1994 at Dover Downs. 1994 would be his first full season, and he finished 17th that year in the points. He did miss a race that season, but up to December 1, 2005, Keller has not missed one since. He won three poles in 1994, his first career coming at Rougemont.

In 1995, Keller received backing from Budget Gourmet, and rewarded them by finishing 4th place in the standings. His first career win occurred in August, as he outpaced the field at Indianapolis Raceway Park. In addition, Keller had 6 top-5s and 12 top-10s that season.

Slim Jim came on board for the 1996 season. Keller secured another top-10 finish in points (6th) with a 10 top-10s season.

Keller struggled through 1997 and 1998, finishing 13th and 16th in the points respective years. He only had 4 top 5s and 17 top 10s in those two years. In 1998, Keller's family owned team had no decals on the car, and that forced the team to sell to the newly formed ppc Racing team.

In 1999, with sponsorship from IGA, Keller won 3 poles (Spring Bristol, IRP, Richmond spring) and 2 wins at Bristol Motor Speedway (spring) and IRP. With 5 top 5s and 12 top 10s, Keller came home 8th in the standings.

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