The term ink may refer to the following:
- a liquid or paste medium, containing various components, such as pigments or dyes, that may be used to color a surface to produce text, images or designs
- a type of dark pigment secreted by certain species of animals, mostly cephalopods, usually as a means of evading predators
- Inkwell (or Ink), a type of gesture and handwriting recognition software technology developed by Apple Inc
- INK (short for I/O Node Kernel), an operating system based on the Linux kernel
- the name of two unincorporated communities in Arkansas and Missouri in the US, respectively
- a 2007 speculative fiction novel by Scottish author, Hal Duncan
- Ink (or Ink Global), a travel media publishing and technology company
- a band formed by the former members of the Australian industrial metal band Jerk
- Ice Nine Kills, an American metalcore band
- a song from British rock band Coldplay's 2014 album, Ghost Stories
- a 1991 album by British New Wave band, The Fixx
- a 2010 album by German/Spanish rock band, Frogcircus
- a 2009 American science fiction fantasy film
- a short-lived American TV sitcom
- I.N.K. Invisible Network of Kids (or Mission Invisible), a French animated TV series
Alternative Spellings (Synonyms): inks