A watermark is a recognizable image or pattern in paper used to determine authenticity.

Watermark or watermarking may also refer to:

Technology Digital watermarking, a technique to embed data in digital audio, images or video Audio watermark, techniques for embedding hidden information into audio signals Watermark (data file), a method for ensuring data integrity which combines aspects of data hashing and digital watermarking Watermark (data synchronization), directory synchronization related programming terminology Watermarking attack, an attack on disk encryption methods

Films Watermark (2013 film), a documentary film directed by Jennifer Baichwal and Edward Burtynsky Watermark (2003 film), an Australian film directed by Georgina Willis and produced by Kerry Rock. Watermarks (film), a 2004 documentary film about the Viennese Hakoah swim team

Music Watermark (Art Garfunkel album), a 1977 album by Art Garfunkel Watermark (Enya album), a 1988 album by Enya Watermark (band), the CCM singing duo Nathan and Christy Nockels "Watermark", a song by Mae Moore from her 1995 album Dragonfly "Watermark", a song by The Weakerthans from their 2000 album Left and Leaving

Organizations Watermark Inc., a radio syndication company Shenhua Watermark coal mine

Other uses Watermark, a 1992 book by Joseph Brodsky

See also Watermark, superimposed identifying digital on-screen graphic in video production High water mark (disambiguation)