The Monadnock [munad'nok] Bluegrass Band is an acoustic band based in New Hampshire, performing traditional, contemporary and original bluegrass music. Mount Monadnock is an isolated peak, 3,165-ft (965 m) high, located in southwest New Hampshire. It is a popular hiking destination, noted for its view. The peak lends its name to the geomorphic term Monadnock, an isolated mountain remnant standing above the general level of the land because of its greater resistance to erosion. It is quite popular for people to climb viewing the southern plains from the top. The group selected this name because they thought it good to be grounded in local tradition. It is unique, and most importantly, it was the only one all members could agree upon.

Through intense research, the group later learned that the term Monadnock translated from Native American means “five musicians who like to play bluegrass music for large groups of people!”

In August of 2003, the band entered an open stage at Blistered Fingers Bluegrass Festival. This was their first festival appearance. They received recognition from the crowd and festival owners. They have since played at several area bluegrass festivals over the years, including Pemi Valley, Blistered Fingers, Ossipee Valley, Boston Bluegrass Union Spring & Fallfests, and have appeared at the Cantab Lounge, the Strange Brew Tavern and other venues in the New England area. In February, 2007, they were the opening band for the Joe Val Bluegrass Festival in Framingham, MA.

Although the members have changed over the years, the Monadnock Bluegrass Band has continued to perform in the New England are ever since.