Blue world
Blue world may refer to:

"Blue World" (Mac Miller song), 2020
"Blue World" (Super Junior song), 2013
"Blue World" (The Moody Blues song), 1983
The Blue World, 1966 SF novel by Jack Vance
Jonathan Bird's Blue World, underwater kids' educational TV show
Endless Ocean 2: Adventures of the Deep, 2007 Wii video game released as Endless Ocean: Blue World in North America
Blue World (album), a 2019 album of 1964 John Coltrane recordings
Blue Wordd AS, a danish company, founded 2018, producing fuel cells

See also
All pages with titles containing Blue world
All pages with titles beginning with Blue world 
Big Blue World, 1984 Paul Haig single
Dark Blue World, 2001 Czech film
In Blue World Tour, 2004 world tour by The Corrs
Love is Blue, whose English lyrics contain the phrase "my world is blue".