Wikipedia:
A blood brother is a male who swears loyalty to another male.
Blood Brothers, The Blood Brothers or Blood Brother may also refer to:
Film
Blood Brothers (1973 film), a Hong Kong film directed by Chang ChehBloodbrothers (1978 film), a film starring Richard Gere, based on a novel by Richard Price (see below)Blood Brothers (1993 film), a made-for-television film featuring Richard YearwoodBlood Brothers (1996 film), a documentary about a Bruce Springsteen and The E Street Band reunionBlood Brothers (2004 film) (Jiang Hu), a Hong Kong gang filmBloodbrothers (2005 film), a Swedish film starring Sofia HelinBlood Brothers (2007 film), a Chinese film directed by Alexi TanBlood Brothers (short film), a 2007 AIDS-awareness film produced by the Bill Gates foundationBlood Brothers (2011 film), an Australian TV film featuring Cariba HeineThe Blood Brothers, the working title of the 2007 Chinese film The Warlords
Literature
Blood Brothers (1965 novel), a novel by John McIntoshBlood Brothers (comics), two Marvel Comics charactersBloodbrothers (novel), a novel by Richard PriceBlood Brother (Traces novel), a novel by Malcolm RoseBlood Brother (novel), a novel by Elliott Arnold; basis for the 1950 film Broken ArrowBlood Brothers (Fyle novel), a novel by Clifford Nelson FyleBlood Brothers, a 1992 novel by Brian Lumley
Music
Blood Brothers (musical), a musical by Willy Russell
Blood Brothers (1995 album), a London cast recording of the musicalThe Blood Brothers (band), an American post-hardcore bandBlood Brothers (EP), an EP by Bruce Springsteen & the E Street Band released with the documentaryBlood Brothers (Kastro and E.D.I. album)Blood Brothers (OuterSpace album)Bloodbrothers, an album by The Dictators"Blood Brothers", a song by Iron Maiden from Brave New World"Blood Brothers", a song by Malevolent Creation from Eternal"Blood Brothers", a song by Manowar from Gods of War"Blood Brothers", a song by Papa Roach from Infest
Television episodes
"Blood Brothers" (CSI: Miami)"Blood Brothers" (Law & Order: Special Victims Unit)"Blood Brothers" (M*A*S*H)"Blood Brothers" (MacGyver)"Blood Brothers" (The Outer Limits)"Blood Brothers" (The Vampire Diaries)"Blood Brother" (Conan the Adventurer)"Blood Brother" (Roswell)"Blood Brothers: The Joey DiPaolo Story", an episode of Lifestories: Families in Crisis about Joey DiPaolo, an 11-year-old living with HIV
Other uses
Blood Brothers (World of Darkness), a vampire bloodline in the role-playing game Vampire: The MasqueradeBlood Brothers Machine Company, an American companyBlood Bros., an arcade game