The Orchestra of the Eighteenth Century (Dutch: Orkest van de Achttiende Eeuw) is a Dutch early music orchestra. Frans Brüggen and Sieuwert Verster co-founded the orchestra in 1981.
The orchestra consists of about 60 members from many different countries, who all play on period instruments. The group was formed as a collective, so all orchestra members and the conductor receive equal shares of concert earnings. The orchestra does not audition its members, but receives them through word-of-mouth invitations.
The orchestra has toured widely both in Europe and America and recorded extensively with Philips Classics, including symphonies of Beethoven,Haydn and Mozart