A Tommyknocker, or knocker, is a supernatural being associated with mining in Cornish, Welsh, and American folklore.

Tommyknocker or Tommyknockers may also refer to:

• Tommyknocker (producer) (born 1977), Italian hardcore techno producer
• The Tommyknockers, a 1987 science fiction novel by Stephen King
  • The Tommyknockers (miniseries), a 1993 miniseries adapted from the novel
• Tommyknocker Brewery, a brewery in Idaho Springs, Colorado
• "Tommyknockers", 1990 song by Blind Guardian from Tales from the Twilight World

This disambiguation page lists articles associated with the title Tommyknocker.
If an internal link led you here, you may wish to change the link to point directly to the intended article.