It may also refer to:
- "Mugen" (song), a song by Nana Mizuki
- Mugen Imawano, a character from the Capcom fighting game series Rival Schools: United by Fate
- Mugen Motorsports (無限)
- Mugen no juunin (無限の住人), a manga known series in English as Blade of the Immortal
- M.U.G.E.N, a 2D fighting game engine
- Mugen, a character in the Japanese Anime series Samurai Champloo
- Mugen Seiki (無限精機), a Japanese manufacturer of radio-controlled cars
- Mugen (town) (木根镇), in Guiping, Guangxi, China
- Mugen Tenshin, a fighting style in the Dead or Alive series
- Mugen Power, a brand of extended batteries for handsets, Pocket Wi-Fi and laptops
is the 20th single by Japanese singer and voice actress Nana Mizuki, which was released on October 28, 2009, by King Records. The single reached number 3 in Japan's Oricon weekly singles charts for the week of November 9, 2009.
Mugen is the ninth single by the Japanese pop-rock band Porno Graffitti. It was released on May 15, 2002. The title has two different meanings: "infinity" (無限 mugen) and "fantasy" (夢幻 mugen). These two words are homonyms. 2002 FIFA World Cup NHK theme song and image song.