Blue Blood or blue blood may refer to:

• Hemolymph, circulatory fluid colored blue by hemocyanin, a respiratory protein evident in most molluscs and some arthropods
• Nobility, a social class

• Blue Blood, novel by Craig Unger, American journalist and writer
• Blue Blood, novel by Edward Conlon (born 1965), New York police officer and author
• Blue Blood, a play by Georgia Douglas Johnson
• Blue Blood and Mutiny, a 2007 book about bank Morgan Stanley
• Blue Bloods (novel series), a series of vampire novels by Melissa de la Cruz, and the first book in the series

• Blue Blood (1914 film), Italian silent drama film
• Blue Blood (1925 film), silent film
• Blue Blood (1951 film), American film
• Blue Blood (1973 film), British horror film directed by Andrew Sinclair
• Blue Blood (2006 film), a documentary film directed by Stevan Riley
• Blue Bloods (TV series), 2010 drama series on CBS
• Blue Blood (2014 film), Brazilian film

• Blue Blood (James Blood Ulmer album), 2001
• Blue Blood (X Japan album), 1989
• Blue Blood, an EP by Atrocity
• Blueblood (album), a 1998 album by Silkworm
• "Blue Blood", a 2023 song by Ive from I've IVE

• Prince Blueblood, a character from My Little Pony
• The Blue Bloods, a wrestling stable from World Championship Wrestling in the 1990s and early 2000s
• Blue bloods in college basketball

• All pages with titles beginning with Blue Blood
• All pages with titles containing Blue Blood