
The Academy of Ancient Music (AAM) is a British period-instrument orchestra based in Cambridge, England. Founded by harpsichordist Christopher Hogwood in 1973, it was named after an 18th-century organisation of the same name. The musicians play on either original instruments from the period when the music was composed or modern copies of such instruments. They generally play Baroque and Classical music, though they have also played some new compositions for baroque orchestra in recent years.
Akademie für Alte Musik Berlin is a German chamber orchestra founded in East Berlin in 1982. Each year Akamus gives approximately 100 concerts, ranging from small chamber works to large-scale symphonic pieces in Europe's musical centers as well as on tours in Asia, North America and South America.

The American Bach Soloists (ABS) is an American baroque orchestra based in the San Francisco Bay Area. The orchestra was founded in Belvedere, California in 1989. Performers share music from Johann Sebastian Bach and his contemporaries during the Classical era, including Handel, Vivaldi, and Mozart, with modern audiences.

The Amsterdam Baroque Orchestra & Choir is a Dutch early-music group based in Amsterdam.

Apollo's Fire, The Cleveland Baroque Orchestra is a popular and critically acclaimed period-instrument ensemble specializing in early music based in Cleveland, Ohio. The GRAMMY-winning ensemble unites a select pool of early music specialists from throughout North America and Europe. Under the direction of Artistic Director Jeannette Sorrell, the ensemble has been noted internationally for creative and innovative programming, and praised by BBC Music Magazine for "forging a vibrant, life-affirming approach to early music... a seductive vision of musical authenticity."

Arion Baroque Orchestra, founded in 1981, is a Canadian baroque orchestra based in Montreal, Quebec, specializing in music of the 18th century performed on period instruments.
L'arpa festante is a German chamber orchestra, specializing in the revival and performance of unknown works, especially from the Baroque era. It was established in Munich in 1983 by Michi Gaigg, who also led the ensemble as concertmaster until 1995. The ensemble takes its name from Giovanni Battista Maccioni's dramatic cantata L'arpa festante which was first performed in 1653, inaugurating what was to become the Bavarian State Opera.

Bourbon Baroque is a period instrument ensemble from Louisville, Kentucky. It specialises in historical informed performance of the music of the 17th and 18th centuries.

Le Concert des Nations is an orchestra with period instruments, able to perform the orchestral and symphonic repertoire from the Baroque to Romanticism: 1600 - 1900. The orchestra was created in 1989, the youngest of the groups conducted by the Catalan maestro and viola da gamba virtuoso Jordi Savall. Le Concert des Nations is the first orchestra of its kind made up of musicians who originate mainly from Latin countries. The name Le Concert des Nations refers to the work by François Couperin as an assembly of "tastes" and bears the mark of the Age of Enlightenment. Le Concert des Nations is the orchestra of La Capella Reial de Catalunya.

The English Baroque Soloists is a chamber orchestra playing on period instruments, formed in 1978 by English conductor Sir John Eliot Gardiner. Its repertoire comprises music from the early Baroque to the Classical period.

Les Escapades from Karlsruhe is a German ensemble for early music established in 2000. The four viola da gamba players, Sabine Kreutzberger, Franziska Finckh, Adina Scheyhing and Barbara Pfeifer, studied in The Hague, Basel and Trossingen. They play in the instrumentation as pure Gambenconsort or in cooperation with other artists or choirs. The name of the ensemble promises unexpected access to the musical world of Renaissance and Baroque music.
Europa Galante is an Italian period-instrument Baroque orchestra founded by violinist Fabio Biondi in 1990 and directed by him.

Ex Cathedra is a leading British choir and early music ensemble based in Birmingham in the West Midlands, England. It performs choral music spanning the 15th to 21st centuries, and regularly commissions new works.

The La Folia Barockorchester is a Baroque orchestra dedicated to historically informed performance. It was founded in Dresden, Saxony, Germany, in 2007 by Robin Peter Müller, who has been its artistic director and concert master. Named after "La Folia", it is focused on music that was performed at the court of Dresden, which they have played at international festivals, and recorded.

Freiburger Barockorchester is a German Baroque orchestra founded in 1987, with the mission statement: "to enliven the world of Baroque music with new sounds".

Modo Antiquo is an Italian instrumental ensemble dedicated to the performance of Baroque, Renaissance, and Medieval music. It was founded in 1984 by Federico Maria Sardelli. Twice nominated for a Grammy award, the ensemble has an extensive discography, primarily on the Naïve, Brilliant Classics, and Tactus labels and have given the first performances in modern times of several works by Vivaldi. Modo Antiquo's larger ensemble is its Baroque orchestra led by Sardelli. It also has a smaller ensemble devoted to Medieval and Renaissance music led by Bettina Hoffmann.

Les Musiciens du Louvre is a French period instrument ensemble, formed in 1982. Originally based in Paris, since 1996 it has been based in the Couvent des Minimes in Grenoble. The Guardian considers it one of the best orchestras in the world.
The Netherlands Bach Society is the oldest ensemble for Baroque music in the Netherlands, and possibly in the world. The ensemble was founded in 1921 in Naarden to perform Bach's St Matthew Passion on Good Friday and has performed the work annually since then in the Grote of Sint-Vituskerk. From 1983 until 2018, Jos van Veldhoven was artistic director and conductor. Shunsuke Sato became artistic director on 1 June 2018.

The Taverner Choir, Consort and Players is a British music ensemble which specialises in the performance of Early and Baroque music. The ensemble is made up of a Baroque orchestra, a vocal consort and a Choir. Performers place emphasis on a historically informed performance practice and players work with restored or replicated period instruments.