Hugh Gregg (November 22, 1917 – September 24, 2003) was an American businessman and politician who served as the 68th governor of New Hampshire from 1953 to 1955, and was the youngest person ever elected to that office.

Gregg was also a local businessman involved with the family mill-working business.

He was instrumental in setting up the Nashua Foundation, which helped the city recover from the loss of textile mills in the 1950s, by recruiting new industry, including defense electronics firms and, later, Digital Equipment Corp.

In later years, Gregg was best known for his defense of New Hampshire's first-in-the-nation presidential primary, as well as his contention that the Republican Party started in this state.

Gregg was known for a sense of humor, reflected in a small hardback book he published, titled All I learned about politics, by Hugh Gregg.