Sigmund Jähn
- Born
- 13 February 1937 (82 years old)
- Died
- 21 September 2019
- Place of birth
- Morgenröthe-Rautenkranz, Saxony, German Reich
- Gender
- Male
Sigmund Werner Paul Jähn (13 February 1937 – 21 September 2019) was a German cosmonaut and pilot who in 1978 became the first German to fly into space as part of the Soviet Union's Interkosmos programme.
