Blue sun may refer to:
- A star with a suitable spectral type O
- Blue Sun (album), a 1982 album by Ralph Towner
- Blue Sun (album), a 2017 album by Jack Nunn on Atlantic Jaxx records
- Blue Sun Corporation, a fictional corporation in the Firefly television series
This disambiguation page lists articles associated with the title Blue sun.
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If an internal link led you here, you may wish to change the link to point directly to the intended article.