Blackadder (disambiguation)

Blackadder is a British television show starring Rowan Atkinson.

Blackadder or Blackader may also refer to:
 * Blackadder, Scottish Borders, a Scottish village
 * Blackadder (clipper), a clipper ship built in 1870
 * Blackadder Water, a river in the Scottish Borders
 * Clan Blackadder, a Scottish clan
 * Blackadder baronets, a Scottish baronetcy
 * Blackadder ITC, an OpenType font
 * Blackadder (whisky bottler), an independent bottler of Scotch whisky
 * Blackadder House, an estate near Allanton, Scotland
 * Blackadder (surname), a surname