The Royal Scottish National Orchestra (RSNO) (Scottish Gaelic: Orcastra Nàiseanta Rìoghail na h-Alba) is a Scottish orchestra, based in Glasgow. It is one of the five national performing arts companies of Scotland. Throughout its history, the Orchestra has played an important part in Scotland’s musical life, including performing at the opening ceremony of the Scottish Parliament building in 2004.

Its music centre and rehearsal studios are directly connected to the Glasgow Royal Concert Hall. The RSNO performs throughout Scotland, at such venues as Glasgow Royal Concert Hall, Usher Hall, Caird Hall, Aberdeen Music Hall, Perth Concert Hall and Eden Court Theatre. Thomas Søndergård is the orchestra's current music director, since 2018.