HR Sendesaal, Concert hall in Broadcasting House Dornbusch, Frankfurt, Germany.

HR Sendesaal is a concert hall housed within the Broadcasting House in Dornbusch with seating for approximately 840 people. The interior walls and ceiling feature around 60,000 sound-absorbing wooden boards that provide excellent acoustic conditions for musical performances and radio recordings.

The foundation stone was laid on 28 February 1953, and the hall, designed by architect Gerhard Weber, opened on 30 September 1954. It served as the workplace of the Frankfurt Radio Symphony until 1987–1988, when it was completely rebuilt and renamed hr-Sendesaal. In 1957 it hosted the Eurovision Song Contest, and in 1968 it was the venue for a debate on the German Emergency Acts.

The hall was built for Hessischer Rundfunk's own radio orchestra, the Frankfurt Radio Symphony, and served as the orchestra's workplace until 1987–1988, when the hall was rebuilt and renamed hr-Sendesaal. Concerts and radio recordings in all genres are held here today. In 1968 the hall hosted a debate on the German Notstandsgesetze (Emergency Acts) introduced that year.

The venue sits within the Broadcasting House and connects to the Dornbusch and Hauptfriedhof public transportation stations, both within walking distance. Plan extra time to navigate through the broadcasting facility when arriving for an event.

The 1967 premiere was not the full orchestral Mixtur but a reduced-orchestra version by the Czech ensemble Hudba Dneska, conducted by Ladislav Kupkovič, who is named as dedicatee of that version. It was given during the Darmstädter Ferienkurse on 23 August 1967.