Earth has been referred to as the Blue Planet due to the abundant water on its surface and/or the atmospheric hue.

Neptune has been referred to as the Blue Planet (Big Blue Giant) due to the atmospheric hue.

Blue Planet (film), documentary film directed by Ben Burtt

Blue Planet (role-playing game), a science-fiction role-playing game set on a largely aquatic world.

Blue giant (disambiguation)

The Blue Planet, BBC documentary series

Blue Planet, a single by Visual Kei/J-rock band Alice Nine