Decembrist(s) or The Decembrist(s) may refer to:

• Decembrist revolt or Dekabrist revolt, failed Russian uprising in December 1825
• Decembrist revolution (Argentina), coup by Juan Lavalle in December 1828
• "The Decembrist" (The Blacklist), episode 8 of season 2 of The Blacklist, aired in 2014
• The Decembrists, Leo Tolstoy's unfinished sequel to War and Peace
• The Decembrists (film), 1927 Soviet silent historical drama directed by Aleksandr Ivanovsky
• The Decembrists (opera), 1953 opera by Yuri Shaporin
• The Decemberists, American indie rock band

• Decembrists Square, former name for Senate Square, Saint Petersburg, Russia
• Decembrists' Island or Dekabristov Island, Saint Petersburg, Russia

• Dekabrist (disambiguation)