Blackadder is a British television show starring Rowan Atkinson.
Blackadder or Blackader may also refer to:
Places Blackadder Water, a river in the Scottish Borders Blackadder House, an estate near Allanton, Scotland Blackadder, Scottish Borders, a Scottish village
People and families Blackadder (surname), a surname Charles Blackader (1869–1921), a British Army officer Clan Blackadder, a Scottish clan Blackadder baronets, a Scottish baronetcy
Other uses Blackadder (clipper), a clipper ship built in 1870 Blackadder (whisky bottler), an independent bottler of Scotch whisky Blackadder ITC, an OpenType font
See also Black adder (disambiguation), snakes