Carl-Zeiss-Planetarium Stuttgart, Astronomical education center in Stuttgart-Mitte, Germany.

Carl-Zeiss-Planetarium Stuttgart is a planetarium in Stuttgart-Mitte, in the Mittlerer Schlossgarten. The building, designed by Wilfried Beck-Erlang, opened in 1977 and has a dome 20 meters across. Inside, a Zeiss Universarium IX projector casts the night sky onto the dome for astronomy and space shows.

Stuttgart's first planetarium opened on 16 May 1928 in a dome atop the Hindenburgbau, initiated by astronomer Robert Henseling and equipped with a Zeiss Model II projector; it seated 450 under a 25-metre dome. The city council decided on 17 June 1943 to close it and store the projector, and air raids in February and March 1944 destroyed the Hindenburgbau. The present building, designed by Wilfried Beck-Erlang, opened in 1977, funded partly by donors and grounded on a Zeiss VI A projector given by the Carl-Zeiss-Stiftung in 1969. It was renamed Carl-Zeiss-Planetarium on 3 December 1988, the centenary of Carl Zeiss's death.

The planetarium sits at the edge of Schlossgarten and draws people of all ages who are curious about the night sky. In the evenings, special shows combine music and astronomy, giving the experience a different tone than a daytime school visit.

The building is at the edge of Schlossgarten and easy to reach on foot from the city center, with the Staatsgalerie U-Bahn stop a short walk away. It is worth booking a show in advance, as seating under the dome is limited.

The original 1928 Zeiss projector is still on display in the entrance area, so visitors can stand next to the machine that first brought the Stuttgart sky indoors. Looking closely, it is clear how detailed the early engineering was, even compared to the digital systems used today.