Red sun or Red Sun may refer to:

Astronomy

• Red giant, a large star with high luminosity and a low surface temperature

• Red dwarf, a small star with low luminosity and a low surface temperature

• Any star with a suitable spectral type

Titled works

• Red Sun, a 1971 Spaghetti Western film featuring a samurai and Western outlaw team-up

• Red Sun (1970 film), a West German crime film

• "Red Sun", a track from Anoushka Shankar's 2005 album Rise

• "Red Sun" (紅日), a 1992 Cantopop song by Hacken Lee later released on collections with the same title

• "Red Sun", the main boss theme of antagonist Sundowner from the soundtrack of Metal Gear Rising: Revengeance

Other uses

• A nickname of the founder of People's Republic of China, Mao Zedong

• Red Sun, one of two versions of the video game Mega Man Battle Network 4

• Communist Party of Ecuador – Red Sun, a Marxist–Leninist–Maoist guerrilla organization in Ecuador

• Red Sun - People's Movement, a Marxist-Leninist-Maoist political organization in Mexico

• Red sunflower, a sunflower variety

See also

• Superman: Red Son, a comic book limited series

• Superman: Red Son (film), an animated film based on the comics