Thicker than Water may refer to:

• Blood is thicker than water, a proverb

• Thicker than Water (1935 film), a Laurel and Hardy film
• Thicker than Water (1993 film), a television film
• Thicker than Water (1999 film), a drama starring several American rappers
• Thicker than Water (2000 film), a surf film by Jack Johnson and Chris Malloy
• Thicker than Water (2005 film), a television film starring Melissa Gilbert and Lindsay Wagner
• Thicker than Water (2006 film) or Blóðbönd, an Icelandic film
• Thicker than Water (2018 film), an Australian drama starring Pete Murray

• Thicker than Water (album), a 1997 album by H2O
• Thicker than Water (soundtrack), a soundtrack album from the 1999 film
• Thicker than Water, a soundtrack album from the 2000 film
• "(Love Is) Thicker Than Water", a 1977 song by Andy Gibb

• Thicker than Water (1973 TV series), a U.S. sitcom based on the UK sitcom Nearest and Dearest
• Thicker Than Water (2013 TV series), an American reality television series
• Thicker Than Water (2014 TV series), a Swedish drama about three siblings who inherit a guesthouse
• "Thicker than Water" (Charlie Jade), an episode of Charlie Jade
• "Thicker than Water" (Only Fools and Horses), an episode of Only Fools and Horses
• "Thicker Than Water" (Under the Dome), an episode of Under the Dome
• Thicker than Water (audio drama), a 2005 audio drama based on Doctor Who
• "Thicker Than Water", an episode of Keeping Up with the Kardashians

• Blood Is Thicker than Water (disambiguation)