Jan Opperman (February 9, 1939 – September 4, 1997), was an American racecar driver. He won the 1971 Knoxville Nationals, the premiere event in sprint car racing. In 1976, he won the Hulman Classic at Terre Haute,Ind., which at the time featured most of the top sprint car drivers in the country and had several drivers in the field who would start the Indianapolis 500 later that month.

Born in Long Beach, California, Opperman died in Fountain, Florida, 16 years after suffering critical injuries from a crash during a race in Jennerstown, Pennsylvania. Known primarily as a sprint car driver, he also drove in the USAC Championship Car series, racing in the 1974 and 1976 seasons. He had 9 champ car starts, including the 1974 and 1976 Indianapolis 500 with 3 top ten finishes.

Considered a natural driving talent, Opperman attracted the attention of Indy 500 veterans Parneli Jones and A.J. Foyt. His first start at Indianapolis came with the team co-owned by Jones, a sprint car veteran and winner of the 1963 Indianapolis 500. Opperman spent his early sprint car racing career running "outlaw" rather than sticking to one sanctioning body. He won dozens of races each year traveling across the country from race track to race track in pursuit of the best paying races.

Opperman was just hitting his stride in the elite United States Auto Club's, sprint, midget and dirt car (called Silver Crown division today) divisions when he suffered critical head injuries while battling for the lead of the Hoosier Hundred at the Indianapolis State Fairgrounds in early September 1976. Opperman missed the 1977 season, but returned to racing on the outlaw circuit in 1978 but never again attained the level of success he achieved before that accident.

Early in his career, Opperman was known as a hippie and part of the drug culture. He later became a dynamic Christian, who, until his catastrophic accident, was working toward creating a ranch in western Montana for troubled youth.

One of Opperman's trademarks was a battered western hat that had been worn by his brother, Jay, who died while racing a sprint car at Knoxville Raceway on May 16, 1970.