A planetarium is a theatre built primarily for presenting educational and entertaining shows about astronomy and the night sky.
Planetarium may also refer to:
Science Astrarium, also called a planetarium, a type of astronomical clock Galileo Galilei Planetarium, locally known just as "Planetarium", a planetarium in Buenos Aires, Argentina Orrery, a mechanical model of the Solar System Planetarium (Belgium), the planetarium of the Royal Observatory of Belgium, in Brussels Planetarium (Copenhagen)
Music Planetarium (album), a 2017 album by Sufjan Stevens, Bryce Dessner, Nico Muhly, and James McAlister "Planetarium" (Ai Otsuka song), 2005 "Planetarium" (Bump of Chicken song), 2005 "Planetarium", a song by Squarepusher from Hello Everything
Other uses Planetarium (film), a 2016 French-Belgian film Planetarium (board game), a 2017 strategy game Planetarium (UTA station), a transit station in Salt Lake City, Utah, US Planetarian - visual novel Planetarion - abandoned video game