Diceman may refer to:
- The Diceman, the nickname of Dublin street performer, Thom McGinty.
- The Diceman (TV series), a series of TV programmes produced between 1997 and 2001.
- The Dice Man, a 1971 book by George Cockcroft written under the pen name Luke Rhinehart.
- Dice Man (comic), a series of five game comics from the creators of 2000AD (and also a character in that series).
- Andrew Dice Clay (nickname)
- Daisuke Matsuzaka, Boston Red Sox pitcher
- One of Richard D. James's aliases.