The death of the brother in Ray Bradbury’s short story, “Mars Is Heaven.” Thinking of it scares me still.
Ralph Touchett (who is coughing up his lungs throughout the book) in James’ Portrait of a Lady…the man is doomed from the get-go, but that deathbed scene is the most sentimental and heart-tugging you could imagine (coming from the oh-so-UN-sentimental Henry James)…
also, the final death in Paul Auster’s Music of Chance…
From George R.R. Martin’s Song of Ice and Fire series…
Ned Stark’s execution, Prince Joffrey’s poisoning at his wedding feast, and poor beleaguered Catelyn Stark gets treacherously murdered and cast into the rivers
Piggy’s death in Lord of the Flies