Harry William Waters (born 16 November 1976) is a British piano and Hammond organ player, associated with progressive rock and jazz. Waters is the son of former Pink Floyd bass player, songwriter, and lyricist Roger Waters and his second wife Lady Carolyne Christie.

Waters has played on tour with his father since 2002, replacing keyboardist Jon Carin on the In the Flesh tour, and later playing alongside Carin since The Dark Side of the Moon Live in 2006. In 2004 he toured with Marianne Faithfull and Ozric Tentacles. He is a fan of Phish and The Grateful Dead and has played in several jam band cover bands. Waters is also a jazz musician who has teamed with the likes of Ian Ritchie (saxophone player for Roger Waters), forming the Harry Waters Quartet. Some demos of his jazz work are available to download from Waters's official website.In November 2008 the first Harry Waters Band album was released. On 19 June 2011 Waters played a Pink Floyd song, "In the Flesh" (from The Wall), with Primus during the band's concert at the Effenaar in Eindhoven. On 17 September 2015 Dean Ween announced on his Facebook page that Harry Waters was the new keyboard player of his namesake group, Dean Ween Band. He is a member of the band McNally Waters with singer-songwriter Larry John McNally.