Blue Sky

Diffuse sky radiation causes the sky to appear blue.

Blue Sky may refer to:
* Blue Sky research, Research and development without obvious application.
* BlueSky Charter School, an online school for Minnesota citizens.
* Blue Sky (film), a 1994 film starring Jessica Lange and Tommy Lee Jones
* Blue Sky Studios, an Academy Award winning computer animation studio
* Blue sky law, state laws in the United States that regulate the offering and sale of securities to protect the public from securities fraud
* Looking Glass Studios, a computer game developer originally known as Blue Sky Productions
* Blue Sky Beverage Company, a soft drink manufacturer.
* BlueSky Software, a defunct video game company
* Blue Sky navigation pod, airborne navigational / attack pod

Music

* Blue Sky (artist), an American painter and sculptor formerly known as Warren Edward Johnson
* Mr. Blue Sky, a song by Electric Light Orchestra from their album "Out of the Blue".
* Blue Sky (song), a song by The Allman Brothers Band; from their 1972 album "Eat a Peach"
* Goodbye Blue Sky, a song by Pink Floyd on their album "The Wall"
* "The Blue Sky", a song by a-ha from their 1985 album "Hunting High and Low"
* Blue Sky a song by Aqua Timez, #9 in their 2005 mini-album A Prayer Playing All Across the Sky