A sinfonietta is a musical group that is larger than a chamber ensemble but smaller than a full-size or symphony orchestra. There are many orchestras called sinfonietta. Some groups are still a sinfonietta despite not including the word in their name:

Called "the city's hippest orchestra" by the Chicago Tribune, Chicago Sinfonietta presents innovative concerts that defy the definition of symphonic music.

The Sinfonietta is an all-women and majority women-of-color orchestra and production company renowned for reimagining the music of popular culture in a symphonic setting.

A sinfonietta is a symphony that is smaller in scale (either in terms of length or the instrumental forces required), or lighter in approach than a standard symphony. Although of Italian form, the word is not genuine in that language and has seldom been used by Italian composers.

The Oregon Sinfonietta, now in its 52nd season and conducted by Dr. Donald L. Appert, is a full symphony orchestra of roughly 70 members that draws together community musicians from the greater Portland metro area.

The Middle Tennessee Sinfonietta is a volunteer orchestra based in Middle Tennessee. We value artistry, collaboration, and inclusivity. We are committed to promoting all areas of the fine and performing arts in our community.

"Sinfonietta" is the Italian word for little symphony (orchestra). Orchestras range in size from full-size, amounting to at least 90 musicians who play large spaces, as in concert halls; to chamber, amounting to 50 or fewer musicians who play in smaller spaces, such as …

Sinfonietta may refer to: Sinfonietta (orchestra), a musical group that is larger than a chamber ensemble but smaller than a full-size orchestra; Sinfonietta (symphony), a symphony that is smaller in scale or lighter in approach than a standard symphony; Sinfonietta, a 1932 composition by Benjamin Britten

A sinfonietta is a musical group that is larger than a chamber ensemble but smaller than a full-size or symphony orchestra.

Sinfonietta is a signature ensemble of the Tovey Centre at the VSO School of Music. This prestige string ensemble led by Ms. Carla Birston, features advanced string students of the VSO School. Serving as an orchestral training program for the next generation of outstanding musicians, they perform a mixture of classical, jazz, and pop music.