Johann Ernst of Saxe-Weimar was a German prince, son by his second marriage of Johann Ernst III, Duke of Saxe-Weimar. Despite his early death he is remembered as a collector and commissioner of music and as a composer, some of whose concertos were arranged for harpsichord or organ by Johann Sebastian Bach, who was court organist in Weimar at the time.
- Occupation
- composer
- Citizenship
- Duchy of Saxe-Weimar
- Born
- December 25, 1696
- Died
- August 1, 1715
