Harold Bruce Jacobi (June 23, 1935 – February 4, 1987) is a former NASCAR driver. In 1987, Jacobi, 51, died of head injuries from a crash during a race at the Daytona International Speedway in 1983. He had 37 USAC Champ Car starts between 1960 and 1970, with a best finish of fourth at Springfield in 1970. Jacobi also completed rookie refresher testing in preparation for the 1967 Indianapolis 500, but did not attempt to qualify.