The Montclair Orchestra is a new semi-professional orchestra based in Montclair, NJ, just outside of New York City, established to provide orchestral music to Montclair, New Jersey and the surrounding communities. Montclair is a cultural and artistic haven in New Jersey, and home to numerous cultural institutions, including the Montclair Art Museum, the Montclair Film Festival, the Wellmont Theater, the Essex County Players, Opera Theatre of Montclair, as well as numerous performances by acclaimed artists throughout the year.

The first Montclair Orchestra was established in 1922, through a collaboration with St Luke's Episcopal Church in Montclair, and offering its first performance at the Montclair Art Museum. After a successful start, the organization moved to Newark, and eventually became the New Jersey Symphony Orchestra, now the largest orchestra in New Jersey.

The Montclair Orchestra aims to perform a diverse range of high level orchestral music at venues throughout Montclair, utilizing a core set of musicians including highly trained amateur and professionals, as well as incorporating select students from local conservatories and music schools. The resulting ensemble will perform high level, challenging musical programs, while furthering opportunities for aspiring musicians at the region's music schools.