James "Hap" Sharp (January 1, 1928 – May 7, 1993) was an American race car driver who drove in six Formula One Grands Prix.

He was most famous however, for being a co-owner and driver of the revolutionary Chaparral sports racing cars built by Jim Hall and Sharp in Midland, Texas.

In 1962 Jim Hall and Hap Sharp formed Chaparral Cars, Inc. and immediately began the design and construction of Chaparral 2, a mid-engined car with an aerospace inspired semi-monocoque fiberglass chassis.

Sharp drove a Chaparral 2E in the 1966 Nassau Trophy race, and substituted for Mike Spence (F1 commitment) driving the Chaparral 2F in the 1967 Targa Florio.

His nickname "Hap" came from "Happy New Year", in connection with his date of birth.